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Bruening Rock Products is a Decorah, IA-based company in the Agriculture and Mining sector.
Perlite is a Canyon Country, CA-based company in the Agriculture and Mining sector.
With its divisions Plansee High Performance Materials and Global Tungsten & Powders (both 100 percent ownership), the joint venture Ceratizit (50 percent) and its holding in Molymet (21.1 percent), the Plansee Group is one of the world`s leading powder metallurgical industrial groups. The Plansee Group specializes in molybdenum and tungsten materials, covering the entire value-added chain—from the ore concentrate to customized tools and components. The Plansee Group`s portfolio includes more than 75,000 different products and tools, which are used in the production of everyday high-tech devices such as smartphones and tablets as well as sustainable and efficient solutions related to mobility, energy supply and industrial manufacturing.
Stealth Ventures Inc. engages in the exploration and production of petroleum and natural gas reserves in Western Canada. The company was incorporated in 1996 and is headquartered in Calgary, Canada.
Diamond Services Co is a Woodward, OK-based company in the Agriculture and Mining sector.