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Oakfield Stone Co is a Fond Du Lac, WI-based company in the Agriculture and Mining sector.
The Conco Companies is a Concord, CA-based company in the Agriculture and Mining sector.
World Minerals Inc. is a world leading supplier of engineered mineral products derived from diatomaceous earth and expanded perlite, natural raw materials possessing unusually light density, chemical inertness, high surface area and intricate structure
A A Production Svc is a Princeton, CA-based company in the Agriculture and Mining sector.
Alpha Natural Resources is a large American producer of metallurgical and thermal coal. It also provides services relating to equipment repairs, road construction and logistics (terminals). It doesn't produce all of the coal it sells, some is purchased and resold. Alpha operates in Virginia, West Virginia, Kentucky, Wyoming, Utah, Illinois, Tennessee, and Pennsylvania.