These places are the typical home of BWEs such as the Bagger 293, which can work in tandem (10[1])with (10[2])LHDs (10[1])in flat areas (10[2])of these places called (-5[1])“benches.” (10[2])Acidithiobacillus bacteria congregate in these locations, (-5[1])where they oxidize toxic sulfides to produce a namesake (-5[1])“acid drainage”. (10[1]-5[2])Untopping (10[1])is a technique (10[1]-5[1])often used in Wales to extend the lifespan of these places. (10[1]-5[1])“Room and pillar” and “longwall” techniques are used to produce stopes in these locations, which can then be backfilled with their discarded tailings. (10[1])The “surface” (10[2])type (10[4])of these places, (10[1])which (-5[1])usually remove (10[1])the overburden (10[1])located above them, (10[3])includes (10[2])their “strip” (10[1])and (10[1])“open-pit” (10[5])types. (10[10]-5[1])For 10 (10[1])points, (10[2])name these facilities (10[1]-5[1])for extracting (10[2])minerals (10[2])and ore (10[1])from the ground. (10[1])■END■ (10[9]0[2])