BACK TO CATEGORIES Photo ID: 1174 (Click photo to view original size.) Category: Machine Guarding Hazard: struck by Standard Violated: 1910.215(b)(9) and 1910.215(a)(4) Corrective Action: Install tongue guards on wheels and adjust the work rest to 1/8 in of the wheel. Description: Hazard: Tongue guard missing from abrasive wheels. Work rest not ajusted to 1/8 of abrasive wheel.