Crushed Copper Ore
From Eco - English Wiki
Crushed Copper Ore is created by crushing Copper Ore. This can be done in three different machines, each of these machines has the same ratio for Copper Ore to Crushed Copper Ore, but differ in time and labor cost. They are ranked as follows:
Level 1: Arrastra
Level 2: Stamp Mill
Level 3: Jaw Crusher
