RT Journal Article SR Electronic T1 English Techniques in Large Tree Transplanting JF Arboriculture & Urban Forestry (AUF) FD International Society of Arboriculture SP 90 OP 93 DO 10.48044/jauf.1982.022 VO 8 IS 4 A1 Newman, Chris J. YR 1982 UL http://auf.isa-arbor.com/content/8/4/90.abstract AB Increases in gas prices in England during 1974 induced Civic Tree Care Ltd. to develop mechanized transplanting of large trees in multiple loads for economy of transport. The Newman Tree-Porter system brought many other benefits; one small machine using a hydraulic hammer drives curved blades to dig 7 sizes of ball from 32″ up to 80″; good performance in hard, stony or frosted ground; improved tree survival, and extension of planting season; low capital cost and low maintenance; versatility for digging and planting in awkward places. Tree-Porter augments Civic Tree Care’s long established Newman Trailer transplanting of larger trees with 90″, 100″, 120″ balls hand-dug and mechanically wrapped with Newman Frames.