Gold Star: Polyurea Coating Job Seals New Mine By Ben DuBose on 2/6/2017 2:33 PM "Wearing standard personal protective equipment (PPE) including full-face air masks, gloves, Tyvek coverall suits, and air-supplied blasting hoods from Clemco Industries, the crew began abrasive blasting the new concrete substrate with a 20/50 SHARPSHOT grit from material manufacturer Minerals Research, Inc. This was used to remove any old coatings and any contaminants." (excerpt) Read full artic