I had a challenge that Dave and his crew had never attempted before but they were prepared to do everything in their power to help us. A 6 ton completely concrete ticket booth had sunken so badly that the doors would not even open anymore. The crew was able to lift it almost 4 inches with ease. 3 years later and the building is still as stable and level as they left it. Dave and his crew were very prompt and professional from start to finish. I highly recommend their services.