The Underground Haulage of Coal by Wire Ropes

ISBN: 9781332208128 出版年：2016 页码：138 Wilhelm Hildenbrand Forgotten Books

It was originally our intention to confine this treatise solely to underground haulage, but while preparing the same we received so many inquiries about wire rope tramways that we considered the subject but incompletely treated without describing this method of over ground transportation, which in many mining districts already plays an important part, and promises with every year to become more and more extended.