The Socorro plant produces crude perlite ore. The various ore products that are sold at Socorro are the result of controlled crushing and sizing to specified grades. The coarser grades of perlite ore are typically used as horticultural soil substrates. The medium sizes are typically expanded into aggregate and building products. The finest sizes are most typically used in chemical and industrial filtration as well as lightweight fillers. The perlitic dome that Dicaperl has developed at Socorro is one of the premier deposits in the world. In the United States, it is surpassed in size only by the No Agua perlite deposit in northern New Mexico, where Dicaperl owns a companion mine. Socorro perlite is shipped all over the United States, Canada, Mexico, and overseas.