Mining Dept., TIMS
Helwan is a highly polluted city .Quarrying, Iron & Steel making, and other activities are the
main pollution sources. Garawi lime stone quarry belonging to the National Cement Company
(NCC) and located near the city of Helwan is selected to describe quarrying operations and to
measure their pollution. Quarrying operations include drill-blast technology and crushing. These
have been analyzed.
Further more, the environmental aspects were identified. Inhalable, thoracic and respirable dust in
different aspects were measured using Haz Dust II. Dust concentration measurements have been
compared with TL V s given in law number 4 for the year 1994.
Finally, control measures are recommended to reduce dust emissions and protect the environment
in one of the main pollution sources near Helwati.