Show Tin Rated Among Scarcest Metals That the thc United States which uses more tin than the rest of or the world work I combined combined 30 30 billion tin cans annually annual annual- ly has ly-has has no tin deposits is one of the interesting facts acts revealed in The Book of Metals b by Donald Wilhelm an Informative work on the thc history mining properties and uses of or metals metals met mel als published by Harper Brothers Indeed tin is almost as scarce as the thc precious metals In contrast to an annual world production of tons of lead tons of or copper and tons of zinc only tons of tin are produced annually I For this rea reason on so called tin cans 1 are only lined with tin Un which seats but 1 IV JI per cent of the weight of oC the can A relatively little known fact tact about copper is that it was first worked in inthis this country by Paul Revere Bevere who was one of the foremost metal designers ners of his day daj This the most stable ol ot metals rustproof and almost ing ing was used by the Eg Egyptians as early as B. B C. C and today finds its greatest uso In millions of miles mites of telephone wire |