=Workers in the Metal Mines.= The workers in the metal mines have a problem different from that of the workers in the coal-mines. The copper country of Michigan located on Lake Superior in the upper peninsula is the most famous metal-producing region of the United States. These mines have been operated for half a century; and for the most part a humane policy has been followed and, consequently, the cities and towns in the region have developed some civic pride, and have an unusually high reputation for orderliness and morality. There are very few of the bad features which one is accustomed to find in such communities. The district has approximately forty-two mines and the products from these mines amount to fifty million dollars a year. The shafts of these copper mines are the deepest holes that have ever been dug in the earth as far as we know. The “Red Jacket” mine is almost a mile and a quarter deep. The shaft of a copper mine is pierced every one hundred feet by levels or tunnels. The trams run in these levels to the chambers where the rock is cut and are known as stopes. Drills are operated by compressed air; the miner bores the holes, places the dynamite charge in readiness, and touches off the charge as he leaves his work at the end of the shift. The broken rock is picked up during the next shift, loaded into the tram-cars by the trammer, and then dumped into the skip or little car by means of which it is raised to the surface. [Illustration: Press Illustrating Service. The new U. S. Bureau of Mines Rescue Car is manned by a mining engineer, a mine surgeon, a foreman miner, a first aid miner, and a clerk.] In the Cœur d’Alene field the process of mining in the lead and zinc mines is very much the same as that in the copper mines of Michigan. The Cœur d’Alene region of northern Idaho is a district in itself. It might almost be called a province, it is so extensive. The drills that are used by the miners are protected in some cases by a stream of water which pours off the end of its point as it comes in contact with the rock. This prevents the dust from flying and being breathed by the worker. These drills are just now being introduced. The old-fashioned drill had no such protection and is called by the miner the widow-maker, because of the gruesome effect on the worker.