Comparative study of noise and hand-arm vibration exposure associated with the use of pneumatic and hydraulic jack-legs Abstract Pneumatic jack-leg drills, used by over 2 000 workers in the mining sector, generate significant levels of noise and hand vibration. Difficult to handle, they also are the cause of numerous accidents and back injuries. A hydraulic jack-leg drill has recently appeared, but very little data on its performance and safety is available.The penetrating power of the two types of jack-leg drills was measured in the laboratory. All measurements of noise and hand vibration levels were performed by the IRSST.The performance and health and safety characteristics of the two types of jack-leg will be described, and recommendations concerning their selection, improvement and use formulated. Produced Under this Project Scientific Reports Exposure to noise and the hand-arm vibration associated with the operation of pneumatic and hydraulic jackleg drills Research Report: R-046Comparative study of jackleg, pneumatic and hydraulic drills Research Summary: PR-113The vibration produced by jackleg drills in Minnova's Opémiska division Literature review: B-027 Scientific Publications Rock-drill vibration and efficiency comparison between a pneumatic and a hydraulic-powered drillBoileau P.-É., Elbrond J.Source : in Proceedings of the UK Informal Group Meeting on Human Response to Vibration (September, 1991 : Buxton, UK), 1991, p. 14 Additional Information Type: Project Number: 0088-0230 Status: Completed Research Field: Mechanical and Physical Risk Prevention Team: Jorgen Elbrond (Polytechnique Montréal)Paul-Émile Boileau (IRSST)