Разлика между сертификата за безопасност на минното дело и сертификата за безопасност на въглищата

The coal safety certificate and mine safety certificate are both compulsory certification credentials for mining equipment and products, issued by the National Safety Mark Center.

The coal safety certification specifically pertains to devices and products intended for use in the subterranean environment of coal mines. И обратно, mine safety certification is designated for equipment and products used in underground settings of non-coal mines.