Hydraulic Jack Pad : Thick steel pad which is placed between the hydraulic jack plunger and butt of the tree to distribute the upward push over a larger area
US Department of Labor, Logging eTool: Glossary, Occupational Safety & Health Administration OSHA, Washington, D.C., USA 2010. https://www.osha.gov/SLTC/etools/logging/glossary. html, (OSHA/ Logging - Amer) {620}