Potentially mineable resources include granite, iron ore and phosophorite. Remaining mineable reserves have been calculated as 13.2 megatons averaging 1.42% nickel and 0.05% cobalt. Remaining mineable reserves have been calculated as 13.2 Mt averaging 1.42% nickel and 0.05% cobalt. The P.B. Area has mineable reserve of 164.39 million tonnes of coal. It has a mineable reserve of 3.401 million tonnes. It has a mineable reserve of 146.14 million tonnes. It has a mineable reserve of 144.63 million tonnes. It has a mineable reserve of 83.05 million tonnes. Aside from amateur collecting Mississippi does not have mineable mineral resources. There was a $1000 reward posted for anyone finding mineable coal reserves. The Atacama Desert in Chile also contains mineable borate concentrations. Some mineable coal is present in the watershed of South Branch Roaring Creek. Only few of them (especially germanite) are, very rarely, found in mineable amounts.