Historically, iron was produced by the hotblast method, or later, the anthracite furnace. Either way, the fundamental activity in iron making ...
IMSBC Code defines MHB ( Materials hazardous only in bulk ) as materials which may possess chemical hazards when carried [.]
The Platts industry glossary provides definitions for common industry terms in the oil, power, petrochemicals, nuclear, gas, coal and metals markets
Strip mining is used when coal seams are loed close to the surface. It relies on very large machinery and requires many fewer workers per unit of coal.