I had a concrete slab installed for a steel building. Jamrock did the site prep work, excavation, and the slab itself. Besides great work on the slab and curb footings (very level, smooth surface, dimensions exactly per drawings), the team went out of their way with "extras". A tree and brush were slightly in the way. They removed them, leaving a very nice, clean area all around the slab. And the work site was cleaned afterwards. The foreman was always on site and accommodated all our requirements. In general, the Jamrock team was on time, professional, and did an excellent job.