results in the development- of a "method f or lead analysis ha*ro already been- obtained

Selikofl, a leading au thority on the health risks of asbestos, said that the E.P.A. roles represented a "very cautious approach" that fo cused on "the potential exposure of people and prevention of cancer while at the same time trying to meet eco nomic and industrial requirements."

There is so doubt but that fibre*is of the type produced by asbestos an of itself lead to complete disablement and to a fatal termination, and this in the absence of a muperadded tuberculous infection.

. ` kong-continued exposure is known to lead to deterioration of performance and morale Seven in the fittest and well acclimatized individuals.

r* Effect of Type and Height The results of tests (Fig. 2)1, conducted at the University of t|l;no with two types of radiators, lead to the following conclusions: 'Conld.eTnsheed hweiathtiinngthefefercatdoiaftaorr.adiator cannot be judged solely on the amount of , I,, i I T I | i | I 2-Ce/emn 7Z/pe ef'\ 2f?

This problem was not solved until later when Dow dis.cove.red- the eutectic of biphenyl and biphenyl ether which became well known as Dowtherm A, i To ge-t useful properties out of biphenyl, Swann simply and cheaply chlorinated it leading to the broad spectrum called the aroclor family which now has more uses than any other chemical

WT SECTION II HAZARDOUS COMPONENTS OF MIXTURES COMPONENT THRESHOLD % LIMIT VALUE COMPONENT threshold % LIMIT VALUE Carbon Black Lead Compounds Mineral Oil (UNITS) o (0-0.6%) - 3.5 mg/nr Tin Organic Compound (0 - 4%) - 0.2 mg/m3 Titanlun Dioxide (0-0.5%) - 5 mg/m3 (UNITS) (0-2%) - 0.1 mg/m3 (0-1%) - 15 mg/m3 SECTION III PHYSICAL DATA APPEARANCE ANO OOOR White, Black or Colored Pellets, practically odorless.

Lead dust, hog waste, pulp chips, etc., 4,000 to 6,000 ft. per min. 211

"Economics and politics are one and the same thing," said Britain's Hugh Dykes, who combined the two as a Member of Par liament and as an investment analyst and a stockbroker m one of London's leading financial houses.

Water Sterilizers (Steam and watts are for each reservoir) 15 25 37^ 50 62K 87'H 125 3000 6000 6000 12000 12000 18000 24000 This condenser exhaust is a part of the fixture, when used, and generally requires to waste over an open funnel, also part of the fixture, leading to the plumbing system waste through a suitable trap or connected to waste pipe from sterilizer chamber, between chamber and trap.

Underdrains leading to points of free discharge are placed in the gravel or crushed rock beds.

If it is attempted to remove heavy dust such as lead oxides by an overhead hood the conditions may be worse than if no exhaust were used at all, owing to the rising air current carrying the dust up through the breathing zones.

Equipment is available which provides two temperature adjustments to each instrument, such that if the general air pressure leading from the central compressor to the thermostat is suddenly changed, the service is switched automatically from one control to the other, and if the pressure again shall be suddenly changed, the service will be switched back.

A more modern adaptation of this type of system for theatres includes a system of exhaust recirculating ducts extending back to the inlet of the supply apparatus, with an exhaust relief branch duct leading to the outside through which most of the discharged air is forced.

i *t\1 il n s n"( t id.l < * Sv jh Whs people use Dutch Boy while-lead J < jil paint i' j tea!