Texas Industries, also known as TXI, is a leading supplier of cement, aggregate and consumer product building materials. The company's principal cement markets are Texas and California, the two largest cement markets in the United States and the two states receiving the largest shares of federal highway funding. TXI is the largest supplier of cement in Texas. The company supplies stone, sand and gravel aggregate products to markets in Texas, Louisiana and Oklahoma. It is also the largest supplier of expanded shale and clay aggregate products in the United States west of the Mississippi. Consumer products, which include ready-mix concrete and packaged concrete products, are marketed throughout the Texas region. The innovation of new products and processes, particularly in the area of recycling, is key in maintaining and enhancing TXI's competitive strengths. The company maintains operations in Fort Worth, Texas.