Boone Quarries

Harold E Johnson Co Inc, operating under Con-Agg Companies, is a diversified supplier based in Columbia, Missouri, specializing in crushed limestone products, concrete, and warehousing services. With over 50 quarry and ready mix locations throughout Central and Northwest Missouri, the company is dedicated to meeting the diverse needs of its customers while supporting local economies. Committed to safety and environmental stewardship, Con-Agg prioritizes a safe working culture through its extensive team of over 200 employees. The company has earned recognition from the Missouri Limestone Producers Association for its mining operations, achieving prestigious safety awards and maintaining an exemplary record of safety within the industry. Generated from the website

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