Mineral Extraction

Linwood Mining and Minerals Corporation is a proven leader in the limestone industry. The company traces its roots back to 1944 and today ranks as one of the largest limestone mining operations in the United States. Linwood is capable of supplying customers with a complete line of calcium carbonate, lime products, and aggregates that meet their individual specifications. In addition, a limestone reserve worth several decades of production assures that Linwood will operate at high capacity levels into the 22nd century. Linwood originally operated as an open-cut limestone quarry. However, because of demand for the uniqueness and high purity of the company’s limestone and exceptionally pure calcium carbonate, mining was extended to an underground operation. As demand for Linwood’s products increased through the years, the company introduced new equipment and technology to accommodate expansion of the mines and meet customer requirements.

Our Products Make

Our products go into a wide range of products, industries, and services.  We produce products that can clean dirty air, make drinking water safe, make steel pure, make freeways strong, make watertight roofs, make egg shells hard, help animals grow, make glass clear, increase soil productivity, improve firmness of plastics, and create cement with a lower CO2 footprint.

Chemical Grade and Construction Limestone

The processing plants in the quarry operate two shifts 5 days a week nearly 24 hours a day. The Processing plants include a primary impact crusher, and three gyratory crushing, screening, and wash plants. Of the product extracted, it is used in a variety of ways that benefit companies and consumers alike.

• 30% Construction
• 25% Roofing powder
• 10% Feed and food processing
• 15% Lime plant feed
• 20% Industrial uses

Construction Aggregate

Our products largely go into construction grade materials.  We refine these minerals for a wide variety of purposes that go into every aspect of construction.

• Ready mix concrete
• Concrete block
• Concrete pipe
• Asphalt
• Highway and heavy construction
• Road base and shoulders
• Gabion baskets
• Ballast
• Erosion control

Fine-Ground Calcium Carbonate

Fine-ground calcium carbonate is naturally produced from limestone and is generally less than 67 micron particle size. FGCC goes into a wide range of products and facilitates many industrial and commercial uses.

• Plastics
• Roofing shingles
• Asphaltic concrete cement
• Ag lime
• Cement production
• Animal feed

Lime Uses

Linwood operates a limeplant with 4 kilns running 24/7 which are capable of producing 250,000 tons of lime annually. The lime products produced are 50% hi-cal and 50% dolomitic lime. From the Lime Plant, 20% of product is shipped by rail and 80% by truck.

Products are mainly used for:

• Steel manufacturing
• Water purification
• Soil stabilization
• Flue gas treatment
• Environmental applications