RIO TINTO AMERICA INC. has sponsored the creation of one or more 401k plans.
Submission information for form 5500 for 401k plan RIO TINTO AMERICA INC. SAVINGS PLAN TRUST
| Measure | Date | Value |
|---|
| 2017 : RIO TINTO AMERICA INC. SAVINGS PLAN TRUST 2017 401k financial data |
|---|
| Unrealized appreciation/depreciation of other (non real estate) assets | 2017-02-01 | $4,168,202 |
| Total unrealized appreciation/depreciation of assets | 2017-02-01 | $4,168,202 |
| Total transfer of assets to this plan | 2017-02-01 | $13,154,414 |
| Total transfer of assets from this plan | 2017-02-01 | $726,769,719 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2017-02-01 | $0 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2017-02-01 | $0 |
| Total income from all sources (including contributions) | 2017-02-01 | $15,505,015 |
| Total loss/gain on sale of assets | 2017-02-01 | $0 |
| Total of all expenses incurred | 2017-02-01 | $232,970 |
| Benefit payments and payments to participlants,beneficiaries,insurance carriers and others | 2017-02-01 | $0 |
| Total contributions o plan (from employers,participants, others, non cash contrinutions) | 2017-02-01 | $0 |
| Value of total assets at end of year | 2017-02-01 | $0 |
| Value of total assets at beginning of year | 2017-02-01 | $698,343,260 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2017-02-01 | $232,970 |
| Total interest from all sources | 2017-02-01 | $0 |
| Total dividends received (eg from common stock, registered investment company shares) | 2017-02-01 | $333,441 |
| Total dividends received from registered investment company shares (eg mutual funds) | 2017-02-01 | $333,394 |
| Administrative expenses professional fees incurred | 2017-02-01 | $155,862 |
| Were there any nonexempt tranactions with any party-in-interest | 2017-02-01 | No |
| Value of net income/loss | 2017-02-01 | $15,272,045 |
| Value of net assets at end of year (total assets less liabilities) | 2017-02-01 | $0 |
| Value of net assets at beginning of year (total assets less liabilities) | 2017-02-01 | $698,343,260 |
| Were any loans by the plan or fixed income obligations due to the plan in default | 2017-02-01 | No |
| Were any leases to which the plan was party in default or uncollectible | 2017-02-01 | No |
| Investment advisory and management fees | 2017-02-01 | $77,108 |
| Value of interest in registered invesment companies (eg mutual funds) at end of year | 2017-02-01 | $0 |
| Value of interest in registered invesment companies (eg mutual funds) at beginning of year | 2017-02-01 | $383,615,539 |
| Value of interest in common/collective trusts at end of year | 2017-02-01 | $0 |
| Value of interest in common/collective trusts at beginning of year | 2017-02-01 | $285,244,945 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year | 2017-02-01 | $0 |
| Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year | 2017-02-01 | $5,270,515 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year | 2017-02-01 | $5,270,515 |
| Net investment gain/loss from registered investment companies (e.g. mutual funds) | 2017-02-01 | $8,603,991 |
| Net investment gain or loss from common/collective trusts | 2017-02-01 | $2,399,381 |
| Were any plan transactions or series of transactions in excess of 5% of the current value of the plan assets | 2017-02-01 | No |
| Assets. Invements in employer securities at end of year | 2017-02-01 | $0 |
| Assets. Invements in employer securities at beginning of year | 2017-02-01 | $24,212,261 |
| Income. Dividends from common stock | 2017-02-01 | $47 |
| Did the plan have assets held for investment | 2017-02-01 | No |
| 2016 : RIO TINTO AMERICA INC. SAVINGS PLAN TRUST 2016 401k financial data |
|---|
| Unrealized appreciation/depreciation of other (non real estate) assets | 2016-12-31 | $5,997,588 |
| Total unrealized appreciation/depreciation of assets | 2016-12-31 | $5,997,588 |
| Total transfer of assets to this plan | 2016-12-31 | $101,339,236 |
| Total transfer of assets from this plan | 2016-12-31 | $155,266,179 |
| Total income from all sources (including contributions) | 2016-12-31 | $55,108,114 |
| Total of all expenses incurred | 2016-12-31 | $612,252 |
| Value of total assets at end of year | 2016-12-31 | $698,343,260 |
| Value of total assets at beginning of year | 2016-12-31 | $697,774,341 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2016-12-31 | $612,252 |
| Total dividends received (eg from common stock, registered investment company shares) | 2016-12-31 | $13,191,867 |
| Total dividends received from registered investment company shares (eg mutual funds) | 2016-12-31 | $12,202,739 |
| Were there any nonexempt tranactions with any party-in-interest | 2016-12-31 | No |
| Value of net income/loss | 2016-12-31 | $54,495,862 |
| Value of net assets at end of year (total assets less liabilities) | 2016-12-31 | $698,343,260 |
| Value of net assets at beginning of year (total assets less liabilities) | 2016-12-31 | $697,774,341 |
| Were any loans by the plan or fixed income obligations due to the plan in default | 2016-12-31 | No |
| Were any leases to which the plan was party in default or uncollectible | 2016-12-31 | No |
| Investment advisory and management fees | 2016-12-31 | $207,402 |
| Value of interest in registered invesment companies (eg mutual funds) at end of year | 2016-12-31 | $383,615,539 |
| Value of interest in registered invesment companies (eg mutual funds) at beginning of year | 2016-12-31 | $379,642,576 |
| Value of interest in common/collective trusts at end of year | 2016-12-31 | $285,244,945 |
| Value of interest in common/collective trusts at beginning of year | 2016-12-31 | $292,897,983 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year | 2016-12-31 | $5,270,515 |
| Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year | 2016-12-31 | $5,311,752 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year | 2016-12-31 | $5,311,752 |
| Net investment gain/loss from registered investment companies (e.g. mutual funds) | 2016-12-31 | $21,575,655 |
| Net investment gain or loss from common/collective trusts | 2016-12-31 | $14,343,004 |
| Were any plan transactions or series of transactions in excess of 5% of the current value of the plan assets | 2016-12-31 | No |
| Assets. Invements in employer securities at end of year | 2016-12-31 | $24,212,261 |
| Assets. Invements in employer securities at beginning of year | 2016-12-31 | $19,922,030 |
| Income. Dividends from common stock | 2016-12-31 | $989,128 |
| Contract administrator fees | 2016-12-31 | $404,850 |
| Did the plan have assets held for investment | 2016-12-31 | Yes |
| 2015 : RIO TINTO AMERICA INC. SAVINGS PLAN TRUST 2015 401k financial data |
|---|
| Unrealized appreciation/depreciation of other (non real estate) assets | 2015-12-31 | $-11,454,292 |
| Total unrealized appreciation/depreciation of assets | 2015-12-31 | $-11,454,292 |
| Total transfer of assets to this plan | 2015-12-31 | $112,765,957 |
| Total transfer of assets from this plan | 2015-12-31 | $150,961,371 |
| Total income from all sources (including contributions) | 2015-12-31 | $-11,399,134 |
| Total of all expenses incurred | 2015-12-31 | $476,183 |
| Value of total assets at end of year | 2015-12-31 | $697,774,341 |
| Value of total assets at beginning of year | 2015-12-31 | $747,845,072 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2015-12-31 | $476,183 |
| Total dividends received (eg from common stock, registered investment company shares) | 2015-12-31 | $19,069,199 |
| Total dividends received from registered investment company shares (eg mutual funds) | 2015-12-31 | $17,568,958 |
| Were there any nonexempt tranactions with any party-in-interest | 2015-12-31 | No |
| Value of net income/loss | 2015-12-31 | $-11,875,317 |
| Value of net assets at end of year (total assets less liabilities) | 2015-12-31 | $697,774,341 |
| Value of net assets at beginning of year (total assets less liabilities) | 2015-12-31 | $747,845,072 |
| Were any loans by the plan or fixed income obligations due to the plan in default | 2015-12-31 | No |
| Were any leases to which the plan was party in default or uncollectible | 2015-12-31 | No |
| Investment advisory and management fees | 2015-12-31 | $476,183 |
| Value of interest in registered invesment companies (eg mutual funds) at end of year | 2015-12-31 | $379,642,576 |
| Value of interest in registered invesment companies (eg mutual funds) at beginning of year | 2015-12-31 | $407,199,400 |
| Value of interest in common/collective trusts at end of year | 2015-12-31 | $292,897,983 |
| Value of interest in common/collective trusts at beginning of year | 2015-12-31 | $303,054,107 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year | 2015-12-31 | $5,311,752 |
| Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year | 2015-12-31 | $5,682,118 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year | 2015-12-31 | $5,682,118 |
| Net investment gain/loss from registered investment companies (e.g. mutual funds) | 2015-12-31 | $-16,753,624 |
| Net investment gain or loss from common/collective trusts | 2015-12-31 | $-2,260,417 |
| Were any plan transactions or series of transactions in excess of 5% of the current value of the plan assets | 2015-12-31 | No |
| Assets. Invements in employer securities at end of year | 2015-12-31 | $19,922,030 |
| Assets. Invements in employer securities at beginning of year | 2015-12-31 | $31,909,447 |
| Income. Dividends from common stock | 2015-12-31 | $1,500,241 |
| Did the plan have assets held for investment | 2015-12-31 | Yes |
| 2014 : RIO TINTO AMERICA INC. SAVINGS PLAN TRUST 2014 401k financial data |
|---|
| Unrealized appreciation/depreciation of other (non real estate) assets | 2014-12-31 | $-7,390,241 |
| Total unrealized appreciation/depreciation of assets | 2014-12-31 | $-7,390,241 |
| Total transfer of assets to this plan | 2014-12-31 | $707,185 |
| Total transfer of assets from this plan | 2014-12-31 | $85,904,831 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2014-12-31 | $0 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2014-12-31 | $0 |
| Total income from all sources (including contributions) | 2014-12-31 | $30,739,898 |
| Total loss/gain on sale of assets | 2014-12-31 | $0 |
| Total of all expenses incurred | 2014-12-31 | $439,936 |
| Benefit payments and payments to participlants,beneficiaries,insurance carriers and others | 2014-12-31 | $0 |
| Total contributions o plan (from employers,participants, others, non cash contrinutions) | 2014-12-31 | $0 |
| Value of total assets at end of year | 2014-12-31 | $747,845,072 |
| Value of total assets at beginning of year | 2014-12-31 | $716,837,925 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2014-12-31 | $439,936 |
| Total interest from all sources | 2014-12-31 | $0 |
| Total dividends received (eg from common stock, registered investment company shares) | 2014-12-31 | $19,430,060 |
| Total dividends received from registered investment company shares (eg mutual funds) | 2014-12-31 | $19,430,060 |
| Administrative expenses professional fees incurred | 2014-12-31 | $439,936 |
| Were there any nonexempt tranactions with any party-in-interest | 2014-12-31 | No |
| Value of net income/loss | 2014-12-31 | $30,299,962 |
| Value of net assets at end of year (total assets less liabilities) | 2014-12-31 | $747,845,072 |
| Value of net assets at beginning of year (total assets less liabilities) | 2014-12-31 | $716,837,925 |
| Were any loans by the plan or fixed income obligations due to the plan in default | 2014-12-31 | No |
| Were any leases to which the plan was party in default or uncollectible | 2014-12-31 | No |
| Value of interest in registered invesment companies (eg mutual funds) at end of year | 2014-12-31 | $407,199,400 |
| Value of interest in registered invesment companies (eg mutual funds) at beginning of year | 2014-12-31 | $366,628,760 |
| Value of interest in common/collective trusts at end of year | 2014-12-31 | $303,054,107 |
| Value of interest in common/collective trusts at beginning of year | 2014-12-31 | $299,514,470 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year | 2014-12-31 | $5,657,535 |
| Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year | 2014-12-31 | $6,307,743 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year | 2014-12-31 | $6,307,743 |
| Interest earned from interest bearing cash (including money market accounts and certificates of deposit) | 2014-12-31 | $8,654 |
| Net investment gain/loss from registered investment companies (e.g. mutual funds) | 2014-12-31 | $9,394,138 |
| Net investment gain or loss from common/collective trusts | 2014-12-31 | $9,305,941 |
| Were any plan transactions or series of transactions in excess of 5% of the current value of the plan assets | 2014-12-31 | No |
| Assets. Invements in employer securities at end of year | 2014-12-31 | $31,934,030 |
| Assets. Invements in employer securities at beginning of year | 2014-12-31 | $44,386,952 |
| Income. Dividends from common stock | 2014-12-31 | $1,482,639 |
| Did the plan have assets held for investment | 2014-12-31 | Yes |
| 2013 : RIO TINTO AMERICA INC. SAVINGS PLAN TRUST 2013 401k financial data |
|---|
| Unrealized appreciation/depreciation of other (non real estate) assets | 2013-12-31 | $-2,086,587 |
| Total unrealized appreciation/depreciation of assets | 2013-12-31 | $-2,086,587 |
| Total transfer of assets to this plan | 2013-12-31 | $44,532,778 |
| Total transfer of assets from this plan | 2013-12-31 | $131,127,226 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2013-12-31 | $0 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2013-12-31 | $0 |
| Total income from all sources (including contributions) | 2013-12-31 | $103,864,880 |
| Total loss/gain on sale of assets | 2013-12-31 | $0 |
| Total of all expenses incurred | 2013-12-31 | $669,903 |
| Benefit payments and payments to participlants,beneficiaries,insurance carriers and others | 2013-12-31 | $0 |
| Total contributions o plan (from employers,participants, others, non cash contrinutions) | 2013-12-31 | $0 |
| Value of total assets at end of year | 2013-12-31 | $716,837,925 |
| Value of total assets at beginning of year | 2013-12-31 | $700,237,396 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2013-12-31 | $669,903 |
| Total interest from all sources | 2013-12-31 | $90,220 |
| Total dividends received (eg from common stock, registered investment company shares) | 2013-12-31 | $20,007,366 |
| Total dividends received from registered investment company shares (eg mutual funds) | 2013-12-31 | $17,854,326 |
| Administrative expenses professional fees incurred | 2013-12-31 | $75,000 |
| Were there any nonexempt tranactions with any party-in-interest | 2013-12-31 | No |
| Assets. Other investments not covered elsewhere at end of year | 2013-12-31 | $161,009,250 |
| Assets. Other investments not covered elsewhere at beginning of year | 2013-12-31 | $194,572,398 |
| Administrative expenses (other) incurred | 2013-12-31 | $555,528 |
| Value of net income/loss | 2013-12-31 | $103,194,977 |
| Value of net assets at end of year (total assets less liabilities) | 2013-12-31 | $716,837,925 |
| Value of net assets at beginning of year (total assets less liabilities) | 2013-12-31 | $700,237,396 |
| Were any loans by the plan or fixed income obligations due to the plan in default | 2013-12-31 | No |
| Were any leases to which the plan was party in default or uncollectible | 2013-12-31 | No |
| Investment advisory and management fees | 2013-12-31 | $39,375 |
| Value of interest in registered invesment companies (eg mutual funds) at end of year | 2013-12-31 | $366,628,760 |
| Value of interest in registered invesment companies (eg mutual funds) at beginning of year | 2013-12-31 | $321,715,507 |
| Value of interest in common/collective trusts at end of year | 2013-12-31 | $138,505,220 |
| Value of interest in common/collective trusts at beginning of year | 2013-12-31 | $125,736,983 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year | 2013-12-31 | $6,307,743 |
| Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year | 2013-12-31 | $5,474,520 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year | 2013-12-31 | $5,474,520 |
| Interest earned from interest bearing cash (including money market accounts and certificates of deposit) | 2013-12-31 | $90,220 |
| Net investment gain/loss from registered investment companies (e.g. mutual funds) | 2013-12-31 | $64,807,651 |
| Net investment gain or loss from common/collective trusts | 2013-12-31 | $21,136,450 |
| Were any plan transactions or series of transactions in excess of 5% of the current value of the plan assets | 2013-12-31 | No |
| Assets. Invements in employer securities at end of year | 2013-12-31 | $44,386,952 |
| Assets. Invements in employer securities at beginning of year | 2013-12-31 | $52,737,988 |
| Income. Dividends from common stock | 2013-12-31 | $2,153,040 |
| Contract administrator fees | 2013-12-31 | $408,566 |
| Did the plan have assets held for investment | 2013-12-31 | Yes |
| 2012 : RIO TINTO AMERICA INC. SAVINGS PLAN TRUST 2012 401k financial data |
|---|
| Unrealized appreciation/depreciation of other (non real estate) assets | 2012-12-31 | $9,187,061 |
| Total unrealized appreciation/depreciation of assets | 2012-12-31 | $9,187,061 |
| Total transfer of assets to this plan | 2012-12-31 | $158,910,020 |
| Total transfer of assets from this plan | 2012-12-31 | $77,270,541 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2012-12-31 | $0 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2012-12-31 | $0 |
| Total income from all sources (including contributions) | 2012-12-31 | $69,438,550 |
| Total loss/gain on sale of assets | 2012-12-31 | $0 |
| Total of all expenses incurred | 2012-12-31 | $213,327 |
| Benefit payments and payments to participlants,beneficiaries,insurance carriers and others | 2012-12-31 | $0 |
| Total contributions o plan (from employers,participants, others, non cash contrinutions) | 2012-12-31 | $0 |
| Value of total assets at end of year | 2012-12-31 | $700,237,396 |
| Value of total assets at beginning of year | 2012-12-31 | $549,372,694 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2012-12-31 | $213,327 |
| Total interest from all sources | 2012-12-31 | $-2,036 |
| Total dividends received (eg from common stock, registered investment company shares) | 2012-12-31 | $14,710,354 |
| Total dividends received from registered investment company shares (eg mutual funds) | 2012-12-31 | $13,127,338 |
| Administrative expenses professional fees incurred | 2012-12-31 | $75,000 |
| Were there any nonexempt tranactions with any party-in-interest | 2012-12-31 | No |
| Assets. Other investments not covered elsewhere at end of year | 2012-12-31 | $194,572,398 |
| Assets. Other investments not covered elsewhere at beginning of year | 2012-12-31 | $168,540,617 |
| Administrative expenses (other) incurred | 2012-12-31 | $116,072 |
| Value of net income/loss | 2012-12-31 | $69,225,223 |
| Value of net assets at end of year (total assets less liabilities) | 2012-12-31 | $700,237,396 |
| Value of net assets at beginning of year (total assets less liabilities) | 2012-12-31 | $549,372,694 |
| Were any loans by the plan or fixed income obligations due to the plan in default | 2012-12-31 | No |
| Were any leases to which the plan was party in default or uncollectible | 2012-12-31 | No |
| Investment advisory and management fees | 2012-12-31 | $22,255 |
| Value of interest in registered invesment companies (eg mutual funds) at end of year | 2012-12-31 | $321,715,507 |
| Value of interest in registered invesment companies (eg mutual funds) at beginning of year | 2012-12-31 | $330,260,110 |
| Value of interest in common/collective trusts at end of year | 2012-12-31 | $125,736,983 |
| Value of interest in common/collective trusts at beginning of year | 2012-12-31 | $0 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year | 2012-12-31 | $5,474,520 |
| Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year | 2012-12-31 | $2,156,593 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year | 2012-12-31 | $2,156,593 |
| Interest earned from interest bearing cash (including money market accounts and certificates of deposit) | 2012-12-31 | $-2,036 |
| Net investment gain/loss from registered investment companies (e.g. mutual funds) | 2012-12-31 | $38,850,403 |
| Net investment gain or loss from common/collective trusts | 2012-12-31 | $6,690,732 |
| Were any plan transactions or series of transactions in excess of 5% of the current value of the plan assets | 2012-12-31 | No |
| Assets. Invements in employer securities at end of year | 2012-12-31 | $52,737,988 |
| Assets. Invements in employer securities at beginning of year | 2012-12-31 | $48,415,374 |
| Income. Dividends from common stock | 2012-12-31 | $1,583,016 |
| Contract administrator fees | 2012-12-31 | $97,056 |
| Did the plan have assets held for investment | 2012-12-31 | Yes |
| 2011 : RIO TINTO AMERICA INC. SAVINGS PLAN TRUST 2011 401k financial data |
|---|
| Unrealized appreciation/depreciation of other (non real estate) assets | 2011-12-31 | $-20,536,646 |
| Total unrealized appreciation/depreciation of assets | 2011-12-31 | $-20,536,646 |
| Total transfer of assets to this plan | 2011-12-31 | $59,636,451 |
| Total transfer of assets from this plan | 2011-12-31 | $39,811,439 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2011-12-31 | $0 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2011-12-31 | $0 |
| Total income from all sources (including contributions) | 2011-12-31 | $-19,881,402 |
| Total loss/gain on sale of assets | 2011-12-31 | $0 |
| Total of all expenses incurred | 2011-12-31 | $7,806 |
| Benefit payments and payments to participlants,beneficiaries,insurance carriers and others | 2011-12-31 | $0 |
| Total contributions o plan (from employers,participants, others, non cash contrinutions) | 2011-12-31 | $0 |
| Value of total assets at end of year | 2011-12-31 | $549,372,693 |
| Value of total assets at beginning of year | 2011-12-31 | $549,436,889 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2011-12-31 | $7,806 |
| Total interest from all sources | 2011-12-31 | $377 |
| Total dividends received (eg from common stock, registered investment company shares) | 2011-12-31 | $3,309,516 |
| Total dividends received from registered investment company shares (eg mutual funds) | 2011-12-31 | $2,233,820 |
| Administrative expenses professional fees incurred | 2011-12-31 | $75,000 |
| Were there any nonexempt tranactions with any party-in-interest | 2011-12-31 | No |
| Assets. Other investments not covered elsewhere at end of year | 2011-12-31 | $168,540,617 |
| Assets. Other investments not covered elsewhere at beginning of year | 2011-12-31 | $77,915,618 |
| Other income not declared elsewhere | 2011-12-31 | $3,027,273 |
| Value of net income/loss | 2011-12-31 | $-19,889,208 |
| Value of net assets at end of year (total assets less liabilities) | 2011-12-31 | $549,372,693 |
| Value of net assets at beginning of year (total assets less liabilities) | 2011-12-31 | $549,436,889 |
| Were any loans by the plan or fixed income obligations due to the plan in default | 2011-12-31 | No |
| Were any leases to which the plan was party in default or uncollectible | 2011-12-31 | No |
| Investment advisory and management fees | 2011-12-31 | $7,806 |
| Value of interest in registered invesment companies (eg mutual funds) at end of year | 2011-12-31 | $330,260,110 |
| Value of interest in registered invesment companies (eg mutual funds) at beginning of year | 2011-12-31 | $286,709,808 |
| Value of interest in common/collective trusts at end of year | 2011-12-31 | $168,540,619 |
| Value of interest in common/collective trusts at beginning of year | 2011-12-31 | $195,007,055 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year | 2011-12-31 | $2,716,414 |
| Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year | 2011-12-31 | $79,427,324 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year | 2011-12-31 | $79,427,324 |
| Interest earned from interest bearing cash (including money market accounts and certificates of deposit) | 2011-12-31 | $377 |
| Net investment gain/loss from registered investment companies (e.g. mutual funds) | 2011-12-31 | $-10,705,682 |
| Net investment gain or loss from common/collective trusts | 2011-12-31 | $8,051,033 |
| Were any plan transactions or series of transactions in excess of 5% of the current value of the plan assets | 2011-12-31 | No |
| Assets. Invements in employer securities at end of year | 2011-12-31 | $47,855,550 |
| Assets. Invements in employer securities at beginning of year | 2011-12-31 | $67,720,026 |
| Income. Dividends from preferred stock | 2011-12-31 | $0 |
| Income. Dividends from common stock | 2011-12-31 | $1,075,696 |
| Did the plan have assets held for investment | 2011-12-31 | Yes |
| 2010 : RIO TINTO AMERICA INC. SAVINGS PLAN TRUST 2010 401k financial data |
|---|
| Unrealized appreciation/depreciation of other (non real estate) assets | 2010-12-31 | $19,338,999 |
| Total unrealized appreciation/depreciation of assets | 2010-12-31 | $19,338,999 |
| Total transfer of assets to this plan | 2010-12-31 | $568,872,034 |
| Total income from all sources (including contributions) | 2010-12-31 | $95,060,878 |
| Total of all expenses incurred | 2010-12-31 | $114,496,023 |
| Benefit payments and payments to participlants,beneficiaries,insurance carriers and others | 2010-12-31 | $114,407,158 |
| Total contributions o plan (from employers,participants, others, non cash contrinutions) | 2010-12-31 | $34,829,747 |
| Value of total assets at end of year | 2010-12-31 | $549,436,889 |
| Value of total assets at beginning of year | 2010-12-31 | $0 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2010-12-31 | $88,865 |
| Total dividends received (eg from common stock, registered investment company shares) | 2010-12-31 | $1,737,601 |
| Total dividends received from registered investment company shares (eg mutual funds) | 2010-12-31 | $1,288,928 |
| Administrative expenses professional fees incurred | 2010-12-31 | $88,865 |
| Were there any nonexempt tranactions with any party-in-interest | 2010-12-31 | No |
| Contributions received from participants | 2010-12-31 | $17,780,698 |
| Participant contributions at end of year | 2010-12-31 | $8,344,459 |
| Participant contributions at beginning of year | 2010-12-31 | $0 |
| Income. Received or receivable in cash from other sources (including rollovers) | 2010-12-31 | $607,638 |
| Other income not declared elsewhere | 2010-12-31 | $849,249 |
| Value of net income/loss | 2010-12-31 | $-19,435,145 |
| Value of net assets at end of year (total assets less liabilities) | 2010-12-31 | $549,436,889 |
| Value of net assets at beginning of year (total assets less liabilities) | 2010-12-31 | $0 |
| Were any loans by the plan or fixed income obligations due to the plan in default | 2010-12-31 | No |
| Were any leases to which the plan was party in default or uncollectible | 2010-12-31 | No |
| Value of interest in registered invesment companies (eg mutual funds) at end of year | 2010-12-31 | $278,365,349 |
| Value of interest in registered invesment companies (eg mutual funds) at beginning of year | 2010-12-31 | $0 |
| Value of interest in common/collective trusts at end of year | 2010-12-31 | $37,664,113 |
| Value of interest in common/collective trusts at beginning of year | 2010-12-31 | $0 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year | 2010-12-31 | $79,427,324 |
| Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year | 2010-12-31 | $0 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year | 2010-12-31 | $0 |
| Value of funds held in insurance company general accounts (unallocated contracts) at end of year | 2010-12-31 | $77,915,618 |
| Value of funds held in insurance company general accounts (unallocated contracts) at beginning of year | 2010-12-31 | $0 |
| Net investment gain/loss from registered investment companies (e.g. mutual funds) | 2010-12-31 | $33,330,440 |
| Net investment gain or loss from common/collective trusts | 2010-12-31 | $4,974,842 |
| Were any plan transactions or series of transactions in excess of 5% of the current value of the plan assets | 2010-12-31 | No |
| Assets. Invements in employer securities at end of year | 2010-12-31 | $67,720,026 |
| Assets. Invements in employer securities at beginning of year | 2010-12-31 | $0 |
| Contributions received in cash from employer | 2010-12-31 | $16,441,411 |
| Income. Dividends from common stock | 2010-12-31 | $448,673 |
| Benefit payments and payments to provide benefits directly to participlants or beneficiaries including direct rollovers | 2010-12-31 | $114,407,158 |
| Did the plan have assets held for investment | 2010-12-31 | No |
