A rectangular wood plank used for levels in scaffolding
Blog
Category: <span>C</span>
Small fragments of lava or smelter material around 1cm
Ore broken by hand or small tools
A channel, tunnel, gate or opening purpose-built for moving ore
A silver-gray, metallic element. Symbol, Co
An isometric metallic mineral, Cr
The genetic association between igneous rocks derived from the same parent magma
Sedimentary rock consisting of rounded pebbles cemented into a solid mass
A crushing machine using a tapered gyrating cylinder revolving on its axis within an outer chamber
A compacted mass of mineral matter