Abstract
Guleman district is the most important chromium ore producing district in Turkey. Natural ventilation is currently being used to ventilate the 26 underground mines in the district. The air quantity obtained in the mines by natural means is neither sufficient nor uniform, and this results in ventilation problems in the working areas of the mines. In order to evaluate these natural ventilation problems in the district, the Kef mine was chosen for the field study, which has 80% of the district chromium resources. Four major areas under the general heading of ventilation surveys i.e.quantity, pressure, temperature (dry-bulb, wet-bulb), and quality of air, were measured for 1 year. The survey results were evaluated theoretically using VnetPC2000 computer software. The amount of insufficient ventilation was determined and recommendations are made for improving the underground working environment in the Kef mine.
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