devils river limestone 예문

• The Devils River Trend unit of the Edwards Aquifer is composed mostly of Devils River Limestone with a thickness of approximately 550 feet.
• That company operated until 1910 when the mine was owned by the Esperado Mining Co . The mine produced between 20, 000 and 30, 000 flasks of quicksilver, most of it from 1895 to 1911, though production continued through World War II . Most of the production occurred on California Hill in cave-fill zones, which are solution caverns in the Devils River limestone.