MQ has grown from a small, local crushed stone quarry to become a leading producer of industrial and construction materials in the southeast. Our mineral deposits of nepheline syenite are vast and amazingly consistent, which ensures our products are always of the highest quality. Located in Central Arkansas, GMQ has easy access to the Arkansas River and Interstates I-40 and I-30. We have direct plant access to the Union Pacific Railroad and can ship coast to coast.