2Q 20172Q 2016Change (%)20162015Change (%)
Copper price (USD/t) 5 662
 4 729 +20 4 863
 5 494 -12
Silver price (USD/oz t) 17.21 16.78 +3 17.14 15.68 +9
Molybdenum price (USD/lb) 8.33
 6.90 +21 6.56
 6.73 -3
Exchange rate (USD/PLN) 3.83 3.87 -1 3.94 3.77 +5