Position statement: Harmful effects of environmental noise exposures

NHCA POSITION STATEMENT Recreational Firearm Noise

Recreational firearm use is a popular leisure-time activity in the United States enjoyed by millions of individuals across all age groups. Recreational firearms produce impulse noise levels that exceed 140 decibels peak sound pressure levels (dB peak SPL). Unprotected ear exposure to this high-level impulse noise can cause immediate and irreversible damage to delicate inner ear structures of bo...

Transgenerational Effects of Environmental Exposures

Transgenerational Effects of Environmental Exposures

environmental effects of gol-e-gohar iron ore mine on groundwater of the area

gol-e-gohar iron ore mine of sirjan in southern part of iran is a large open pit that operates below the groundwater table and during mining operation, dewatering is required to prevent operation processes from flooding. current operation is going on by digging wells in or out of the pit and pumping to prevent flooding. as a result of the former dewatering operation a vast deep cone of depressi...

Uncertain Inheritance: Transgenerational Effects of Environmental Exposures