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    As new as the breaking surf at the beach, as timeless as the mountain range from which they come, their unique products are a combined gift of nature and the ingenuity of man. As a mining people, they of the United States Pumice Company are dedicated to your needs while preserving their natural heritage - the scenic wonder and wildlife of the American wilderness. From a modest beginning in 1941 their company has grown to become an international marketer of block pumice, an industrial mineral they mine in Mono County, California. This is High Sierra country overlooking Mono Lake, not far from the recreational ski runs of Mammoth Mountain. Many of their employees live in, or near Lee Vining, a service town close to their mill. Company administrative offices are located within the City of Los Angeles, California.