bedrock, boulder, business, canyon, city, cliff, construction, copper, copper-mine, deep, deposit, dig, dirt, dump, equipment, excavation, geology, gold, heavy, hill, industry, lake, machinery, man made, metal, mine, mineral, molybdenum, mountain, open, ore, pit, porphyry, power, roads, rock, salt, silver, tailings, terrace, truck
0 comments:
Post a Comment