Document JvrNkDj6DJGK8QoNY6dVKy432

SiSimplicity of design plus precision manufacture llgkt ongto worai goar, bofl boaring typo ipood itdvur. Mochonlcel linkogo Irantfenni Iho rotary laotloo of Iho spaed radwr to Iho required reclp. rocetlng motion. Vtrquod quodrupls (Ooubto lutilon--dow- ' dltthargo) shock vcfv*. cono or boll typo. 1/3 or Vt H.r. klgN itortlng totquo electric Heavy rlbbod ond webbed cot! Iron boio. Chemical liquid ond consltllng ol Inlersbongoable bortel ond bouilng omnblf containing Iho plvngor. porting and pool* log gland. Stroke odfuilmont cou. pllng. Stroke od|vl. mom WHllt PUMt IS IN OHIATION is op. tlonol. Soolod-in^lt prodilo* tack and pinion at* sembfy drives tbo plun. gor In Iho liquid ond. assure high standards of accuracy and dependability in Hills-McCanna "U" type metering and proportioning pumps This problem bos grown cnnrrncq during the lost two ur ihice dtt^, because til ibe tremendous exparuitq' our industrial potential In the Ua[i! Slates. The control ol these wsite^ charged imo the olr is not simple, ^ limitation frequently can be jutti^ only on aesthetic grounds. Demon*,, lion of the dinger to human heati^ not easy because the concentration^ the common contaminants are uaoq] far below the maximum allowable7*' centrationx employed in protecting^ plant employee. The three tourcejj, evidence which may be used--(l)itk reaction of the workers to much amounts, (2) the careful study of'# usual fniUnees of extraordinary etgi sure in the plant or the community^ (3) attempts at correlation with& morbidity and mortality rates of repSi able diseases as gathered by the hcjj| deportments--are discussed in dels! In each instance these appresa give some help, but even when sll'oi iie employed effectively, large gapi^ main to interfere with the formulstxi of adequate control procedures. Si belter indices are required, the pool use of held morbidity surveys slud^i the incidence, prevalence and outca of human illnesses in clean and polla areas will be described. Although.j approach is costly and time*consumji it is likely the only method whlchly) furnish the information .needed byitti health authorities and the Induiu engineers in their efforts to answer t question. MCA Taper,-no number. Whenever small volume flows must be metered or propor tioned continuously, the simple, foolproof design of HillsMcCanna "U" Type Pumps pays big dividends. For flows up to 24 gallons per hour per feed, its accuracy and relia bility suit it for research, pilot plant operation and full scale processing alike. The "U" type pump is available In a range of capacities with 1, 2, 3 or .4 feeds. Its design permits use of a wide varloty of materials of construction In the liquid end. Write for descriptive literature which gives lull Information. HlLLS-McCANNA CO.. 236? W. Nelson Street, Chicago 18, 111. meteninq and pAopv'Uiotuiiy fuuttpi Aha Manufacturers oft SAUNDERS TYPE DIAPHRAGM VALVES FORCE FEED LUBRICATORS MAGNESIUM SAND ALLOY CASTINGS Construction of throe tiered hydrael trie plants. 260 miles north of Las geles, to provide an additional IIX kilowatts of electricity for that city, is .. Ing completion. Each has one unit ratal. 37400 kw. The plants are located gorge of the Owens HIvet and utilise, flow of water discharged from CrojJj Lake reservoir which has a storage pacity of 193.466 feet: The total aver* ststio head from inlake to discharge iu-| river is 2.400 feet. A 230 kilovolt bus neets the three planis and feeds single circuit 230 kv transmission S* which terminates 260 miles away l? Angeles. A 145,000 kw mrhine generator-^1 largest in the Public Service Electric 1*. Cas Co, New Jeraev, system and the & of two to he install'd in lh eompiw new Kearny Generating Station--was pWJ in sewiee lu Mareh. The second gener^ will go on the line lalur this year. new nation is located adjacent to the tfV Inal Kearny Station which went imo senjg in 1926. The turbine .will operate at W? psi and 1100 F, with reheat to 1050 F. > POWCB JULY }K PULVERIZER COMPANY 1349 Mackltnd Ave. St. Louis 10, Mo, 117