Asambodo nchekwa coal na asambodo nchekwa ogbunigwe bụ nzere nke mmanye maka akụrụngwa na ngwaahịa Ngwuputa., nke National Safety Mark Center nyere.
Asambodo nchekwa coal metụtakwara ngwaọrụ na ngwaahịa e zubere maka iji na gburugburu ebe a na-egwupụta coal.. N'aka nke ọzọ, mine safety certification is designated for equipment and products used in underground settings of non-coal mines.