Abstract
The rates of water flow were measured from the impact point of a jackpick steel fitted with a cone-shaped Mark 3 and a coil-shaped Mark 4 water attachment. The Mark 4 more consistently distributed water to the pick point with the coil in an up and down position than the Mark 3. In addition, the percent of water reaching the impact point of the jackpick steel (at different set rates of water flow, from different water attachments) could be expected to demonstrate the optimum rate of flow for each attachment tested.