International Association of Industrial Accident Boards and Commissions , Grinding Wheel Manufacturers Association , American Engineering Standards Committee and United States. Bureau of Labor Statistics. Safety Code for the Use, Care, and Protection of Abrasive Wheels : Bulletin of the United States Bureau of Labor Statistics, No. 338 , Washington, D.C: G.P.O., April 1923, https://fraser.stlouisfed.org/title/3986, accessed on December 21, 2024.