AGRIBUSINESS: Recycled gypsum as an agricultural product.

AGRIBUSINESS: Recycled gypsum as an agricultural product.Gypsum, a source of calcium and sulfur, can benefit crops and soils. When recovered from power plant smokestacks, it brings the additional benefits of recycling.Gypsum is a mineral that is naturally found concentrated in various places and can be mined out of the ground. Warren Dick's research research focuses on gypsum recovered from coal-fired electricity generating power plants. Gypsum that comes from coal plants is called flue-gas desulfurization gypsum, as it comes from the process that 'scrubs' sulfur out of the smoke stacks to reduce air pollution.