anthracite is the new black, page-22

Thanks KOOKE and Wang. Heres a piece that i find illuminating for myself and other newbies,
"The use of closed furnaces in industrial ovens for the smelting of iron ore etc means the release of smoke or emissions can present a major issue as smoke released builds up pressure. To counter this coking coals are processed to reduce volatile matter and impurities This process however can cost as much as US$140 tone, adding to the cost of the already expensive coking coal (currently re $200 tonne)

"Given that anthracite trades at around $130 tone it can be used as coking coal substitute to help reduce costs. One drawback of anthracite is that it does not swell under extreme heat; this is a key property of coking coal that is essential as an oxygen reductant in smelting iron ore. Therefore in STEEL production anthracite needs to be blended with coal" source recent Breakaway research.