Among those drawn to jobs in the booming West Virginia coal mines during the first part of the twentieth century were thousands of African Americans. They proved successful in this industry—despite low wages and discrimination at the hands of mine operators. This book, the first published memoir by an African American coal miner, is a stirring tale of survival and achievement. Bob Armstead interweaves stories of family and community with a broad history of underground mining to paint an en...

Among those drawn to jobs in the booming West Virginia coal mines during the first part of the twentieth century were thousands of African Americans. They proved successful in this industry—despite low wages and discrimination at the hands of mine operators. This book, the first published memoir by an African American coal miner, is a stirring tale of survival and achievement. Bob Armstead interweaves stories of family and community with a broad history of underground mining to paint an en...

"Friction" is the best guide on learning about types of friction, static friction, force of friction, rolling friction, sliding friction.