 The Nernst Lamp Company, a subsidy of Westinghouse, then bought Barringer Hill and began mining, extracting a few hundred pounds of ytrria minerals annually for a few years.Eventually, Nernst Lamp Company ceased operations as newer technologies surpassed the lamp.The seventy-three pound group of crystals (of gadolinite), found in March 1903, was the greatest "find" of record in this mineral; but just one year later, a mass of roughly crystallized gadolinite was found, partly imbedded in the bed-rock at the northeast corner of the hill, that measured thirty-six inches long, thick at the widest part, and weighed a little over two hundred pounds.