DUBLIN–(BUSINESS WIRE)–The “Global Coal Mining Directory 2021” directory has been added to ResearchAndMarkets.com’s offering. This Directory covers everything you need to know about world’s coal mining companies. Whether you are looking to source new sales leads, identify new investment opportunities or monitor the activities of your competitors, the Global Coal Mining Directory is an invaluable reference resource. This Directory provides you with up to date and unrivalled coverage of the mar