In the present work radon concentration measurements were performed for one year in 12 different boron, chromium and coal underground mines in Western Turkey. Lucas cells and nuclear track detectors were used for the measurements of radon and its decay products. The effects of parameters, such as type of mine, gallery depth and ventilation rate, on the radon concentration in mine air were exami...

Utilization of belt air in underground coal mines has been discussed extensively during the last decade. The Final Report of the Technical Study Panel on the Utilization of Belt Air and the Composition and Fire Retardant Properties of Belt Materials in Underground Coal Mining formed by the Miner Act of 2006 recommends research on leakage, use of booster fans, and escapeway safety. This paper di...

The calculation of air distribution in large mine ventilation networks is usually carried out by numerically solving a system equations representing Kirchhoff’s circuit laws. This formulation the problem traditionally only considers frictional resistance straight sections airways. However, when analyzing changing modes, it also important to correctly consider shock losses, which sufficiently af...