官方藏书 / Science_-_Earth_Agricultural_Farming / Coal and the coal mines

Coal and the coal mines

Homer Greene · Science_-_Earth_Agricultural_Farming · 27 章

目录

The Project Gutenberg eBook of Coal and the coal mines Chapter 2 COAL AND THE COAL MINES Chapter 4 Chapter 5 PREFACE.CONTENTS.LIST OF ILLUSTRATIONS.CHAPTER I. IN THE BEGINNING.CHAPTER II. THE COMPOSITION OF COAL.CHAPTER III. WHEN COAL WAS FORMED.CHAPTER IV. HOW THE COAL BEDS LIE.CHAPTER V. THE DISCOVERY OF COAL.CHAPTER VI. THE INTRODUCTION OF COAL INTO USE.CHAPTER VII. THE WAY INTO THE MINES.CHAPTER VIII. A PLAN OF A COAL MINE.CHAPTER IX. THE MINER AT WORK.CHAPTER X. WHEN THE MINE ROOF FALLS.CHAPTER XI. AIR AND WATER IN THE MINES.CHAPTER XII. THE DANGEROUS GASES.CHAPTER XIII. THE ANTHRACITE COAL BREAKER.CHAPTER XIV. IN THE BITUMINOUS COAL MINES.CHAPTER XV. THE BOY WORKERS AT THE MINES.CHAPTER XVI. MINERS AND THEIR WAGES.GLOSSARY OF MINING TERMS.INDEX.THE FULL PROJECT GUTENBERG™ LICENSE