concassage primaire
l''extraction de minerai, de pierre ou de morts-terrains, jusqu''à et y compri s le concassage primaire. ec.gc.ca. ec.gc.ca. The exemption for mining is for activities. [...] related t o the actual remov al of ore, rock or overburden, up to and including primary crushing. ec.gc.ca. ec.gc.ca. Non.
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