SEMA has been serving companies in the industrial and mining fields since the early 1990s. Our involvement in these markets has included engagements with several mineral mining and waste management companies across the United States. We have provided basic site services such as earthwork, drainage, bridges and roadways, as well as more intricate construction, including waste collection and containment facilities, caps, covers and liners inhibiting waste migration, and process pads. We offer industrial strength results.