Abstract: A system for producing a continuous high pressure fluid jet stream useable in underground and above ground mining and drilling for cutting a variety of different materials such as coal, mineral ore, rocks and the like. The system includes a hydroelectric pulsed liquid jet fluid pressure intensifier which employs a high energy electric arc that acts upon liquid to both heat and pressurize it to form a high energy pulsed liquid jet. The high energy pulsed liquid jet is then supplied to a pressure vessel that serves as an accumulator through a substantially zigzag tortuous path and one way check valve. The pressurized liquid is then drawn off as needed in a continuous high pressure fluid jet for performing work.