Ключевые слова: cast, coal, digger, earth, earth moving, energy, engineering, environment, environmental, equipment, excavation, fossil, fuel, geological, geology, ground, heavy, industrial, industry, layer, load, loading, machinery, machines, mechanical, mine, minerals, miners, mining, moving, natural, new zealand, non renewable, nz, open, open cast, outdoors, outside, pit, power, resources, seam, south island, stockton, strata, stratum, trucks, west coast, westland, worker, working,