Coking Coal companies: every US-listed filer, largest first

The 5 most heavily traded of 5 companies filing under Coking Coal
Company	Files under
HCC WARRIOR MET COAL, INC.	Coking Coal
AMR Alpha Metallurgical Resources, Inc.	Coking Coal
METC Ramaco Resources, Inc.	Coking Coal
SXC SunCoke Energy, Inc.	Coking Coal
AREC American Resources Corp	Coking Coal

Industry is as each company files it with the SEC.

Families group the sub-industries a filer can choose between, so Coking Coal covers every variant inside it rather than splitting into a page per variant with two companies on each. The order is by what actually trades, price times volume on the latest stored bar, rather than by market capitalisation: that figure is derived from a filer-supplied share count which is sometimes wrong by orders of magnitude, and a ranking built on it puts those errors at the top.