A 61 cm-diameter inlet duct leads from the face of the TBM to the dust collector which is mounted on the backup.

Benzene is passed through a vaporizor then bubbled through molten lead in a series of reaction vessels at a controlled rate and temperature.

. *310 Plumblam; See Lead, poisoning Plutonium production.

Hydration of this compound under the conditions of the ex-' periment can lead to the formation of several hydrates of dicalclum silicate [4].

Service Presswie Ratings for Wrought-Copper or Bronze Solder Joint Fittings* Type of Solder ( 50-50 Tin-lead (ASTM) B32 Alloy Grade 50A) | ( Serrac* UmfK f 100 150 200 250 Maximum Strrici Preawre, Pag Woter 1 In.* 200 150 100 85 to 2 In* 2ln> 175* 150s 125* 100s 90* 754 75* 60s 1a5T _ -- 15* 95-5 Tin-antimony or 95-5 Lead-tin (ASTM B32 Alloy Grade 5A) 100 150 200 250 500 400 400 350 300 250 200 175 300 275 200 150 15 Solders with melting point 1100 F or above 350 270 190 155 120 Note: Ratioc other than specified here may be axed upon the recomraeadxUon of the manufacturer aa to the proper adder* that ehould be used.

Lorillard & Co. plans soon to pro- , mote on a nation scale Kent cigarettes according to these ads are made with a Micronite filter developed by researchers in atomic energy plants This filter takes out seven times more nico- tine and tars than any other leading filter cigarette Because of the interest these advertisements have aroused CU checked to see whether Kents actually live up to the claims Tests were made to compare the amount of nicotine and tar present in the smoke of Kents with that of six other cigarettes Three of Viceroy Du Maurier and Parliament tipped cigarettes Included also were Sano a denicotinized cigarette and John Alden a cigarette said to be made of special nicotine tobacco For purposes of comparison an ordinary cigarette Old Gold made by the makers of Kent was included Two to six cigarettes of each brand were tested for nicotine and tar content Each cigarette was fixed in a glass tube somewhat as in a cigarette holder and smoked by a mechanical apparatus which collected the smoke The average smoker's rate of one puff a minute was simulated each puff lasting about two seconds and containing about 35 cubic centimeters of smoke a little more than two cubic inches The nicotine and the tars were extracted from the smoke and their quantity was determined Tests show significant differences in nicotine and tar content from cigarette to cigarette of the same brand The figures in the table are averages for each brand but in view of the differences between cigarettes and the small number of samples the figures give only a rough indication of the relative standing of the brands listed It is possible that tests of a large number of cigarettes of each brand would show that Old Gold Viceroy Du Maurier and Parliament all have about the same nicotine content and the relationship of Kent John Alden and Sano might be changed However it is clear that the Kents are very low in both nicotine and tar as compared with the regular brands of cigarettes tested What is the attraction of a cigarette whose smoke is low Tar is variously defined in the technical literature For purposes of comparison among the cigarettes one of the definitions was adopted for use throughout the test JUNE 1952 in nicotine and tar Apparently the irritating and toxic effects of tobacco smoke are of concern to many smokers Recently a third effect has been widely discussed in medical publications that is the possibility that heavy smoking contributes to the development of lung cancer Nicotine in amounts present in ordinary cigarettes has a definite constricting action on blood vessels This action is particularly undesirable in persons with Buerger's disease and peripheral arteriosclerosis The tars normally present in cigarette smoke have some irritating effect on the mucous membranes of the upper respiratory tract and the lungs Only extensive clinical tests can show whether the nicotine and tar content of Kent smoke is low enough so that Kents can be safely smoked by individuals with certain diseases such as Buerger's disease and some types of stomach ulcer It is doubtful that any physician will permit a patient with these disorders to smoke even a Kent type of cigarette It is possible however that in other less serious conditions a physician may feel that the reduced nicotine and tar content in Kent cigarettes recommends its use in place of the ordinary cigarette TABLE OF TEST RESULTS Cigarette brand OLD GOLD SANO JOHN ALDEN VICEROY DU MAURIER PARLIAMENT KENT Nicotine in smoke per . cigarette milligrams 1.7 0.8 0.3 1.8 2.1 2.4 0.5 Tar content of smoke per cigarette mg 17 10 9 8 76 76 2 Kent cigarettes have their drawbacks however Probably because of their filter they require considerably more effort to draw on than do other cigarettes Unless you make the extra effort you will get a good deal less smoke with each puff than with other cigarettes Some smokers who tried Kents complained that they were lacking in flavor Perhaps this was because they were getting relatively little smoke in each puff The price of Kents in New York City at the time of test was 31 per pack compared with 22 per pack for the leading brands consumerreports a* Copyright1952byConsumers Union of U.S.

Such erator must read cart sometimes simpli e situation leads to people getting lost fy his job.

vent leading to outdoor Hue. or (2) gas absorber installed on transformer case.

Bigger Stake Eyed Crane, said to be the nation's largest manufacturer of valves, fittings, fabricated piping and; accessories, also is a leading, producer of plumbing and heat ing appliances.

sented leads to an illustrative procedure for a cooling load Economic considerations must be of particular influence in calculation, and a numerical example is given to demon the selection of equipment for cooling season operation in strate the calculations involved.

("Dumont") and The Bus ton Lead Company/ Inc., a wholly owned subsidiary of Dumont ("Buston") and The Glidden Company ("Glidden").

Progressive dyspnea, which can lead to disablement, is the chief symptom.

In view o f th e p u b lic a t io n s of Gibson , an d the co n t r o v e r sy o v e r th e r e latio n sh ip betw een lead poison in g c. id c h r o n ic n e p h r it is w h ich h a s p r o d u c e d a m o n o gr a p h (C h r o n ic N e p h r it is an d Le a d P o iso n in g ,by L.

Progressive dyspnea, which can lead to disablement, is the chief symptom.

Now, vers often, vent lines lead to condensers, scrubbers or other trap ping devices.