. "SDN:L22::TOOL0358" . "Bolt Associates Inc. PAR air gun"@en . . "A towed chamber that rapidly released a single bubble of highly compressed air on command to generate an acoustic shock wave plus sonic oscillations as the bubble collapsed. These were used as energy sources for seafloor seismic surveys from the mid-60s until superseded by the Bolt Long-Life air gun in 1992. Bolt Associates Inc. are now known as Bolt Technology Corporation."@en . . . "SDN:L22::TOOL0358" . . . "accepted"@en . . . "Bolt PAR air gun" . "false" . "Bolt PAR air gun"@en . "2" . "SDN:L22::TOOL0358" . "2" . . . "2010-11-18 12:39:41.0" . "2010-11-18 12:39:41.0" . . .