http://www.health.state.mn.us/divs/eh/meth/lab/index.html
"What is a meth lab?
Meth can be manufactured in a clandestine drug lab (meth lab) in a variety of indoor and outdoor locations, including houses, apartment buildings, motels, vehicles, wooded areas or fields. Meth is manufactured (or cooked) by applying common, readily available materials to one of several basic recipes.
Meth "recipes" can be easily obtained through the Internet or by associating with other cooks. There are hundreds of chemical products and substances that are used interchangeably to produce meth. The substitution of one chemical for another in meth recipes may cause the process to be more hazardous (resulting in fire or explosion) or may result in a tainted, final product with unwanted or dangerous effects.
Many dangerous chemical ingredients are used to make meth. The cooking process causes chemical residues and meth to be deposited on surfaces and household belongings. Also, chemical by-products such as toxic phosphine gas may be formed during meth manufacture. This may occur through planned chemical interaction, or by processing errors, such as increasing cooking temperatures too rapidly.
Every meth "recipe" starts with over-the-counter medications that include pseudoephedrine or ephedrine in their contents. The pills are crushed and mixed with other chemicals in the process of cooking meth. Various meth recipes include combinations of volatile organic compounds (VOCs), acids, bases, metals, solvents and salts. Making meth with these chemicals can result in explosions, chemical fires, and the release of toxic gases.
Meth cooking also produces solid and liquid wastes that can contaminate a building and its contents, or the groundwater or soil where they are dumped.
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What are the potential health effects from exposure to a meth lab?
Health effects caused by exposure to meth lab chemicals depend on: (1) the lab process and chemicals used; (2) the amount of chemical and length of exposure; and (3) the age and health of the person exposed. Chemicals may enter the body by being breathed, eaten, or absorbed through the skin.
An acute exposure is one that occurs over a relatively short period of time. Acute exposure to meth lab chemicals can cause shortness of breath, cough, chest pain, dizziness, lack of coordination, chemical irritation, or burns to skin, eyes, nose and mouth. Death could result when exposure is to a particularly toxic chemical or the person exposed is particularly vulnerable. Acute exposures can occur in non-drug users during or immediately after cooking.
Less severe exposures can result in symptoms such as headache, nausea, dizziness, and fatigue or lethargy. These symptoms have been known to occur in people exposed to active labs, but also in people ---particularly law enforcement personnel and other first responders --- who have entered a drug lab before the site has been cleaned or ventilated. These less-severe symptoms usually go away after several hours of exposure to fresh air.
Exposures to lab chemicals or byproducts over a long period of time - called chronic exposures - may cause both long-term and short-term health effects. Long-term exposures to VOCs may result in liver and kidney damage, neurological problems, and increased risk of cancer. Even at low levels, exposures for long periods by people living in a former lab site could result in serious health effects."
Wow, this looks very dangerous and complicated. Even more dangerous and complicated than making chloroform. And crackheads do this? Surely not.
Lanie