They put oil of cloves vapor (attractive to cockroaches) behind a gas-tight window of material transparent to infrared.
Hackenberg is a marvel of underground mechanics, equivalent to ten dreadnaughts buried in a mountain, connected by poison-gas-tight tunnels and served by miles of subterranean .
SPE 2013: Archer shows new GoM storm plug NEW ORLEANS – A new storm plug from Archer is showing at the 2013 SPE annual meeting. STORMLOCK is an ISO 14310 V0-rated gas-tight storm plug for the Gulf of Mexico, says Archer.
Sept. 30, 2013 - Offshore Magazine