HBM Holdings-backed Mississippi Lime, a producer of calcium products, completed the acquisition of Valley Minerals, a mine operator. Financial terms were not disclosed. "We have been working on plans for a modern dolomitic production facility to support our steel market business for several years. Valley Minerals has products, production processes and applications we're familiar with, which should make its transition to Mississippi Lime smooth and seamless," Paul Hogan, Mississippi Lime President and CEO.