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(e) STANDARDIZATION

A detailed program of sampling procedures is required to ensure
reliable results. The membrane filter method and procedures have varied
over the past few years throughout the continent and needs now to be updated.
This would ensure that the effort is placed on control and not in endless
confrontations between industry, inspection authorities, and union
representatives. In order to accomplish this, it is suggested that a
collective meeting with Workmen's Compensation Board, Department of Mines,
and various other regulatory bodies and industry be organized to establish

detailed sampling procedures and methods.
(£) OTHER SAMPLING

1. GENERAL

Recognizing the fact that little is known about the background
dust loading the amount of asbestos in the air (including > 5u fibres) and
the inaccuracies of the membrane filter method, it is suggested that a
detailed sampling program commence correlating total suspended particulate,
total respirable dust, total asbestos dust, and fibre concentration. The

reason for this program would be threefold:

= to determine and get a better picture of the total
environment that workers are exposed to;

= for the purpose of correlating a gravimetric procedure
with fibre concentration for the future reduction or
illumination in the membrane filter sampling as a control
device;

- for the determination of effective enclosures.

2. EQUIPMENT

It is recommended that a "lo-vol" sampler be purchased for
the above program with the required accessories to sample suspended
particulate and total respirable dust. If this instrument does prove
valuable then further consideration should be given to purchasing more

for use in stationary sampling locations throughout the mine and mill.