Gilliam & Mundy, USA

Country / Region: Charlstoneville, USA

Industry: Water Well

Client Name: Gilliam & Mundy

Client Description:

With over 50 years in the water well industry, Gilliam & Mundy is a drilling contractor serving water well and quarry businesses in Virginia.


Test was run in order to show the performance and penetration rate of the Puma Hammer P5SH and compare it with the competitor’s hammer. The hammer showed a successful performance in hard fractured rock. Four hole grids of 49 ft. deep were drilled, testing 2 holes with each hammer (Puma P5SH and competitor’s). Air pressure was 340 PSI, pulldown was 300 psi and equipment used was Ingersoll Rand T4, with a 900 SQ FT compressor.


  1. The Puma P5SH showed an improvement of +20% in drilling speed.
  2. Penetration rate for the Puma P5SH was 2.20 ft/min, as opposed to 1.85 ft/min with the competitor’s hammer.



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