PLANNED REDUCTION SCHEDULE

To achieve particulate emission reduction at
controllable sources and as reflected in Table 7,
it is necessary that the following items be
satisfactorily completed and operational.

All mobile drills must be equipped with fabric
filters. This will be done my mid 1975.

The remaining jaw crusher and cone crusher areas
at the Minesite must be equipped with fabric
filters for ventilation and dust control. This

is also expected to be done by mid 1975. Remaining
areas at the Mine buildings below the top cone
crusher are not to be used; it is recommended they
be dismantled and removed.

Diesel engines at the Powerhouse, including No. 16,
must be regularly maintained to avoid excessive
carbonaceous and gaseous emissions.

Dryer burners must also be operated and maintained
efficiently, and baghouses kept at peak filtration
efficiency. A few missing bags would result in
increased emissions.

A fabric filter baghouse must be installed to vent
and exhaust the Dry Rock Storage Building. This
work must be complete during 1975.

The New Tramline and Concentrator facilities must

be equipped with fabric filtration, and for internal
recirculation unless heated make-up air is being
provided.

The Dust Agglomeration System must be used to its
fullest on all potentially air-borne dusts. Emissions
at the tailings are even further reduced by deposition
from an overhanging conveyor rather than swivel pilers.
It is expected that installation of a heated and
enclosed tailings conveying system during 1975 will
allow 100% on-time of the wetting system. At present,
in temperatures of less than 30 F., freezing and
plugging problems are experienced. Average on-time

for December 1974 so far has been 13%.