| http://www.w3.org/ns/prov#value | - Police may also get tips from sanitation workers, firefighters, health care workers, or other public service workers who suspect they have discovered a lab during the course of their duties.[91] ??? The Stanislaus County (California) Sheriff ???s Department equipped a van with an infrared sensor that detects changes in the atmosphere caused by the vapors released from methamphetamine labs.
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