Knowles Industrial Services – Shotcrete and Gunite – New England June 13, 2015 webadmin ⋅ Industrial Services ⋅ Actual footage of Knowles Industrial Services performing shotcrete and gunite work. Like 0 Thanks! You've already liked this « Types of Footings Residential and Commercial Construction » Holtzman Home Improvement LLC. | Kitchen Remodeling Phoenix, AZ