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ACQUISITIONS - Khoemacau (Details) oz in Millions, $ in Millions | Feb. 25, 2019 USD ($) t oz | Jun. 30, 2019 USD ($)
--- | --- | ---
Acquisitions |  |
Maximum future additional payments upon satisfaction of certain conditions | $ 212.0 |
Option contribution amount | $ 53.0 |
Throughput levels | t | 13,000 |
Khoemacau |  |
Acquisitions |  |
Maximum future additional payments upon satisfaction of certain conditions | $ 212.0 | $ 212.0
Silver production acquired (as a percent) | 80.00% |
Option contribution amount | $ 53.0 |
Silver production option (as a percent) | 20.00% |
Rate reduction (as a percent) | 50.00% |
Silver production after threshold (as a percent) | 40.00% |
Rate reduction threshold | oz | 32 |
Rate reduction threshold with option | oz | 40 |
Spot price paid (as a percent) | 20.00% |
Increased level of throughput (as a percent) | 30.00% |
Cupric required initial investment | $ 100.0 |
Contributions payable in 2019 | 60.0 |
Contributions payable in 2020 | 125.0 |
Loan receivable commitment | $ 25.0 |
Loan receivable term | 7 years |
Khoemacau | LIBOR |  |
Acquisitions |  |
Loans receivable variable interest rate (as a percent) | 11.00% |

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