The original PAR Air Gun was invented by Bolt's founder Stephen Chelminski in the early 1960s and soon became the predominant marine seismic energy source. Since the company introduced the Marine Air Gun in 1964, Bolt Technology Corporation has been the world's leading designer and manufacturer of seismic energy sources. Bolt Technology Corporation continues to supply a wide range of seismic energy sources intended for application to all phases of exploration and production seismology, these include:

• Marine Air Guns
  > Long-Life
  > Annular Port Gun
  > Down-hole Air Guns
• Mud Guns for transition zone surveys.
• Portable Air Gun Systems for remote or environmentally sensitive areas.
• Borehole Air Gun Tool for cross-well seismic surveys.

Bolt's leadership in energy source technology extends beyond the design and manufacture of air guns. The company provides custom air gun array design for every application including shallow water hydrocarbon exploration, deep basin hydrocarbon exploration and deep-crustal seismology studies. Array designs are computer modeled and optimized using the latest software. Special configurations can be quickly evaluated at Bolt's test pond and new products are characterized in periodic tests at an instrumented deep-water test facility. Bolt's expertise in the development of impulse generating devices has also been applied to such diverse fields as soil consolidation, well de-scaling, well remediation and fish deterrence.