Subpart-O of the 29 CFR 1910-General Industry Standards is entitled Machinery and Machine Guarding. This standard addresses various machines and machine guarding techniques. Machine guarding information for construction activities can be found in Supart-I of the 29 CFR 1926-Construction Standards. This section covers guarding and safe use requirements for hand and power tools, in addition to several other types of equipment used in construction activities. Additional information con machine guarding can also be found here: https://www.osha.gov/SLTC/machineguarding/index.html.
Tennessee Department of Labor/TOSHA