Because of the widespread use of benzene, benzene eaissions in the aabient air have been determined to result in significant human exposure, por these reasons, exposure to benzene emissions may reasonably be anticipated to result in one or aore serious effects that can be expected to lead to an increase in mortality or an increase in serious, irreversible or incapacitating, reversible illness.

It would seem appropriate that these departments take the lead in considering the questions of undertaking such a project; whether it should be led by one of the functional departments, or done under R&D auspices, or handled via outside contract or other means.

` Quebec baa na fibre limit Mbcatos dust fibres Inhaled durlnJung periods of time produce tung-sarrlng known as usbesiosis that coijcausc , death and can lead la oilier d lncludbi| cancer.

Willson GA2fl M-S-A Lead-Foe and others, (1) Fibers per milliliter greater than 5 microns in length, as ^ - determined by the membrane filter method at 400-450X magnification (4 millimeter objective) phase contract illumination.

i:' ["i 1 . ' 1 though 'vc would hop to Unv significant information by the cud of the ,:> irt* grant year, as you know tracing approximately 8,000 workers i- tc H>n ami time-consun bng and it may not be possible to complete this study by that time. i am cure that your long experience in all aspects of this type nf research leads you to conclude along with us that things never go as quickly as one would like, and I think our group has been fortunate in having collected and and analysed as much data as v/e have by the middle of the third year of the study.

I And it is not idle to speculate that the pile-up of purported evidence damning VCM on health-safety grounds could yet lead to severe use restrictions that would chop huge holes in the projected growth of rigid and flexible PVC--and not only for foods/beverages packaging.______________ The danger, of course, is that the health-safety issue could become an emotional one.

Several other approaches did not yield any promising leads either.

International Business Machines Corp International Lead Zinc Research Org Johns-Maarville Corp.

This is sup ported by recent magazine articles showing the waiting time for quipment delivery which also must be taken into accpunt on top of the necessary lead time required for undertaking acceptable improvement projects such as would be required to meet any severely restrictive new vinyl chloride monomer standard.

Peterson, MCA's Director of Public Relations and Education, described the Public Relations Committee plan for a task force to serve as a coordinating group for public appearances by the leading and best spokesmen of the chemical industry.

It is intended to bring together all the facts concerning the use of poly vinyl chloride food packages and to make an assessment of the risk factors and thus provoke, what we hope will be useful, discussions lead ing to a better understanding of all the factors involved.

Low serum potassium causes increased automaticity especially of the latent pacemaker fibers This is probably due to decreased potassium conductance with consequent decreased efflux of potassium in the face of sodium influx Low serum potassium by causing increased excitability tends to lead to 628 May 1977 SOUTHERN MEDICAL JOURNAL Vol 70.

The exhaust ducts leading from the bagging machines were plugged dur ing my visit; and after cleaned, were plugged again in a few hours.

Check location of takeup of lead concentrate reclaim conveyor.

This drilling of extra holes in the top cover can lead to very uneven distribution of dust on the filter. 7.