OCR Text |
Show U':3ED FOR "FIREWORKS Strontium Is apparently ono of tho minerals which tho United States neither produces or Imports In any 'largo quantities according to J. M. Hill of the United States Geological Survey. In 1911 only $44 worth of strontium salts wero imported, nnd this Biipply seems to have been sufficient suffi-cient for two yoars. Stronlum nltrato, however, was probably pro-bably Imported ns thoro was little appal ap-pal ent diminution In the manufacture manufac-ture of fireworks, in splto of "safo and sane" Fourths throughout the country and In this Industry otronlum salts aro used to prodtice "red fire." Tho salts most commonly used by the mak era of pyrotechnics are gruped with a large number of chemicals "not otherwise oth-erwise provided for" by tbo tariff schedules, so that no record of the imports of any special kind Is posslblo. |