L&H Industrial, located in Wyoming, USA, has designed a hydraulic snubber that the company claims improves mining shovel dipper performance by enabling smooth opening and closing of the dipper door. This system, according to the vendor, has been proven to reduce maintenance costs for the dipper, dipper door and even for haul trucks. Tests have shown cracking to be drastically reduced in the dipper and dipper door because the door is hydraulically closed rather than slammed by weight and gravity. Less damage to haul trucks is incurred because the door does not slam against the side of the bed when opening. Due to the smooth closing action, the dipper latch bar and dutchman insert also benefit by providing longer service life. www.lnh.com