Traditional metal working in Mexico more. Important metal working centers include Taxco for silver, Santa Clara del Cobre for copper, Celaya for tin and Zacatecas for wrought iron. Metal working in Mesoamerica, especially of silver, gold and copper was advanced by the time the Spanish arrived, mostly concentrated in the modern states of Michoacán, Oaxaca and Guerrero. The mining and working of metals probably came to Mesoamerican cultures from the south. Metal working was principally in gold, silver, tin and lead, with some copper work known in what is now Michoacán. Gold was generally obtained in powder or pellet form in rivers and streams from
Jim Pewter teen rating for his time slot. Pewter hosted an oldies rock show on KMET in Los Angeles, prior to becoming program director of K-EARTH in 1973 and P.D. of KRLA in 1983. He was voted Oldies Program Director of the Year in 1974 by the Billboard International Radio Programming Forum. In 1973, Pewter co-produced and co-hosted Dick Clark's 20 years of Rock 'N Roll Radio show, syndicated throughout 250 stations. He also wrote and co-produced a four-hour documentary, "The Beatles, Their Long and Winding Road", aired in California and later wrote, co-produced and hosted the six-hour radio special "Rock and