Mining buckets are mostly used for digging and loading in many different mines, they are mostly to use on large machines up from 45 ton excavators, however some operators may like mining buckets up from 20/30 ton excavators. CSW machinery customizes mining buckets up from 20 ton excavators. We uses HB400/450/500 grade steel in mining buckets, such as hardox 400/450/500, Weartuf 450/500, NM400/450/500 for wear resistance.