Luck Companies, a provider of crushed stone aggregates and environmental performance products, is expanding its quarry operations across South Carolina. The company will develop new sites in Chester, Edgefield, Saluda, and Spartanburg counties and grow existing sites in Fairfield and Kershaw counties. The plants in Fairfield and Kershaw counties currently have over 30 existing employees. The combined new investment of $450 million will create 70 additional jobs.