High Intensity Discharge: A generic term for mercury vapor, metal halide, and high pressure sodium lamps and fixtures.
High Intensity Discharge
High-Density Polyethylene
Highest Dose Tested
High-Level Nuclear Waste Facility
High-Level Radioactive Waste (HLRW)
High-Line Jumpers
High-Risk Community
High-to-Low-Dose Extrapolation
Holding Pond
Holding Time ...
Studies conducted indicate that many fluorescent and high intensity discharge (HID) lamps exhibit the toxicity characteristic (TC) for mercury because of the use of that compound in producing these mercury-containing lamps.
 See also: Discharge, Organism, Vapor, Mercury, Exposure
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