Kerford Limestone Company is one of the largest limestone mines in Nebraska. It produces more than 2 million tons of crushed limestone annually. The company s limestone is used in asphalt and concrete for the construction of roads, bridges and buildings. Kerford Limestone Company also serves the agriculture and feed grade industry. The company is a part of NEBCO, which is a family-owned and operated business that operates over 20 companies. The parent company maintains a staff of nearly 1,000 employees. It serves the mining, finance, real estate development, agriculture, transportation, recreation, and highway and road construction industries. NEBCO offers traffic control equipment, retaining walls, ready-mixed concrete products and landscaping materials.