Ore Storage — Built in 1984 for J.R. Simplot Co. in Pocatello, Idaho, this Monolithic Dome, 182′ × 82′, stores 40,000 tons of raw phosphate ore. A train 8 miles long pulling 800 railcars could be unloaded into this dome that supports a 60,000 pound concrete pad and a 40,000 pound conveyor.