lsayre wrote:Is the Mammoth vein still the largest anthracite vein of them all?
There is a book titled, "The Anthracite Coal Industry", by Peter Roberts and W.G.Sumner published in 1901 that has the information you are looking for. It's details the different coal areas, coal depths, coal quality, plus a lot more. It's part of the Google scanned book project. Here an online link:http://books.google.com/books?id=BR9DAAAAIAAJ
I downloaded a pdf of it, but don't remember where I found the download link.