He incorporated measurements made around the periphery of four mines, at varying distances from the draglines, around the clock, and during the four seasons of the year. Other factors considered included sound frequency and nature of land use at the receiver, plus other equipment in use at the mine. His goals were to provide a reliable data base of actual levels and then to compare those found with general levels or acceptability. Noise is generally an annoyance, but can interfere with well-being and lifestyle. And at high levels can contribute to hearing loss.
Ground vibration is generally a nuisance, but if excessive can cause structural damage to buildings.
As a result of Dr. Ping's work, a data base was established, including a range of distances over which noise would be acceptable versus not acceptable under various conditions, and an evaluation of exposure to potential receptors at nearest proximity. Evaluation of Assumptions Used to Rate the Risk of Using Phosphogypsum. Since there are more than 700 million tons of this material already on the ground in Florida, the Institute has been quite active in recent years in researching potential uses for it. A use of choice would be in road construction. Where it could replace materials far more expensive than the pg.