Show lead and zinc boon boom in district joplin mo lead and zinc ore pro in the d strict around joplin has gone to the highest levels since october 1931 zinc plo production has averaged tons and lead ore production has av j er edged aged rm tons weel ly y for sever several at weeks zinc pro product ducton on has been stel stepped ped up to more than 0 OW tons weekly 7 nc ne coneen concentrates in bins in this field have been reduced tons in 1933 and now stands at only 14 tons the lowest ionest stage for many ye years ars A year ago stocks in bins stood near bo tons in 1933 lead ore stocks hae hane been reduced tons and now stand at f tons |