This book, written by John Huffman Dague, is a visual guide to understanding mine accidents and their prevention. Illustrated with 200 pictures taken by W.B. Bunnell, the official photographer of the D.L.W.R.R. company, this book is especially adapted for the teaching of English to non-English speaking mine workers. This book is a valuable resource for anyone working in or studying the mining industry.

This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it.

This work is in the "public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.

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