H. M. Holloway Inc.

We provide gypsum, compost, lime, sulfur, sulfur/gypsum blend, lenardite along with Agronomy service

  • About
  • About
    Providing Agriculture Gypsum for farmers since 1932. We own and operate our gypsum mine which is located in Lost Hills CA. our gypsum is OMRI Approved. We also provide many Ag products such as Sulfur, Compost and Lime.
    We supply between 350,000 to 500,000 tons per year on a timely and affordable basis.