first completely successful installation of Nomex
fabric filters on asbestos ore drying equipment, and
the design and installation of an effective dust
_ agglomeration system to reduce fugitive dust at tailings
deposition. Present control measures are outlined

in Appendix E.

The ongoing environmental improvement program has been
developed in consultation eh government, labour and
industry. Environmental and process improvement tend
to go hand in hand, the process improvement allowing
generation of the capital required. Some recent

accomplishments are set out below.

6. MINESITE

a) Rotary drills are now equipped with

effective dust control equipment. The

only dust collection devices on the drills

in 1970 were Rotoclones (inertial
collection devices) which emitted
approximately 1 GR/SCF exhaust particulate.
Experiments were conducted with fabric
filtration devices (emitting less than
0.05 GR/SCF particulate) but due to "wet
hole" problems were not completely satis-—-

factory. Since 1974, all drills have been