BOILING POINT AND MELTING POINT: Not Pertinent SPECIFIC GRAVITY (H.,0 = 1): 2.45 VOLATILE CONTENT: Absorbed Water 1 -- 4% By Weight.

Specialties, Heating Armstrong Machine Works 851 Maple Street Three Rivers, Mich.

Insulation, Underground Insulation, Underground The Ric-wiL Company Agents In Principal Cities Established in 1910 CONDUIT SYSTEMS FOR UNDERGROUND STEAM PIPES Union Trust Bldg., Cleveland, Ohio--New York, Chicago, San Francisco Underground Steam Construction Co. 75 Pitts Street, Boston, Mass.

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442 Tu'Cnty-seiond Congress--Naliaitaf Safety Council BaMd upon the official record *4 the I^tctfUit Commerce Comratsskm. covering all raOreads oi the United States, 1912 as compared vith 1913 shows a decrease in the number oi employee deaths from 3J1S to 557, and a decrease m injuries from 171.4(7 to 17.4On a man-boor basis, this represents a reduction of 715 per cent ta deaths and 81-A per cent m injuries.

come close enough to induce a spark Gasoline blow torches and plumbers' furnaces Gasoline blow torches and plumbers' fur naces are hazardous because fuel may be spilled when filling is being done and be cause fuel must be used for pnming when lighting Thev should never be filled hot, and it is preferable that fueling be done outdoors Only equipment from reliable manufac turers made according to the NFPA Standard No 393, Construction and Use of Gasoline Blow Torches and Plumbers' Furnaces, should be used, and the operator should understand and explicitly follow the instruc tions of the manufacturer The equipment should never be used close to combustible materials Other means of performing the operation are preferable Liquefied petroleum gases Liquefied petroleum gases include any material which is composed predominantly of any of these hydrocarbons, or mixtures of them propane, propylene, butane (normal butane or isobutane), and butylenes The gases hquefv under moderate pressure, but convert into a gaseous state upon relief of the pressure LP-gas vapor presents a hazard comparable to that of any flammable natural or manufactured gas, except that since it is heavier than air, the matter of adequate venti lation requires added attention Liquefied petroleum gases are used as fuel gases, as raw materials in chemical processes, for example, in the making of hydrogen, and to form special atmospheres in heat-treating furnaces It is important that employees understand the properties of these gases and that they be thoroughly trained in safe prac tices for handling, distribution, and operation Systems should be designed and installed bv experienced, reliable concerns which are thoroughly familiar with the hazards, with state and local codes, and with fire organiza tion and insurance company recommenda tions (See National Fire Protection Associa tion, Factory Mutual System, LP-Gas Association, and Factory Insurance Associa tion references on this subject in "Refer ences '') References Amencan Conference of Governmental Industrial Hygienists, 1014 Broadway, Cincinnati, Ohio 45202 Threshold Limit Values (published annually) American Mutual Insurance Alliance, 20 North Wacker Dr , Chicago, III 60606 Safe Handling, of LP-Oas When Used as a Motor Fuel Amencan Petroleum Institute, 1271 Avenue of the Americas, New York, N Y 10020 Cleaning Petroleum Storage Tanks Sufe Practices in Bulk Plant Operations Specifications for Welded Steel Oil Storage Tanks Standard No 650 American Societs lor Testing and Materials, 1916 Race St, Philadelphia, Pa 19103 Standard Method of Test for Vapor Pressure of Petroleum Products Standard D323-58 Book of ASTM Standards Parts 17 and 18, `Petroleum Products including Fuels, Solvents, Burner Fuel Oils, Cutting Oils, Hvdrauhc Fluids Parts 20 and 21, "Paint, Varnish, Lacquer and Related Products, including Naval Stores, Industrial Aromatic Hydrocarbons, and Formulated Products " Part 22, `Engine Antifreezes, Halogenated Organic Solvents " Amencan Standards Institute, 1430 Broadway, New York, N Y 10018 Safety Color Code for Marking Physical Hazards and Identifying Certain Eqpt Standards for Petroleum Products Zll Senes Z53 I Amencan Welding Society, 2501 NW7th St, Miami, Fla 33125 Safe Practices for Welding and Cutting Containers That Have Held Combustibles Association of Amencan Railroads, Bureau (or the Safe Transportation of Explosives And other 1043

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1AIUX WORKMEN'S COMPENSATION Octet*, m?

4M public health laws SUPPLEMENT Cumi XI (Foofoete* Id Dunkawnl roiieyuwd 10 Chapter toeMMa fmrtetitig rUtutn aflacud by I9IM9S4 hfHaiba.

ELLIOTT DESIGNED OPTIONS & ACCESSORIES Elliott gear benefits and features Proven high reliability-manufactured since 1912 Backed by worldwide service Easy maintenance/inspection Economic/quiet operation Custom ratios Large oil tank in gear case - no need for separate oil tank for most applications Eight frame sizes to match turbine frames Single source gear - turbine responsibility Horizontally-split gear case can be opened w/o disturbing piping on connections Gears and pinions are hubbed and finish ground Pinion is solid single forging Gear can be designed to API 677 or API 613 Gears are rated to AGMA 6011 Gear cases are poured high tensile, heavy section cast iron Thin walled liner bearings Electronic Digital Govenor Improved speed control and reliability over hydraulic governors No need for easily misplaced, separate programmer Sized for 19" rack mounting Low initial cost MPU okay indication Remote speed control capability 4-20 ma C 300 ohms Failsafe Programmable idle speed, ramp rate, turbine speed, electronic trip speed Elliott bearing housing isolators Longer bearing life Single source component responsibility Designed by the steam turbine manufacturer for steam turbine applications to address - Turbine growth - Turbine materials - Turbine bearing options Installed and tested by Elliott 9

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440 OCCUPATIONAL TUMORS AND ALLIED DISEASES formation of diethyl arsine has been diminished by the treatment of the wooden supports with carbolineum, thereby impairing the growth of moulds.

The following are suggested specifications which should be presented to a prospective contractor to deteraine whether a renovation or asbestos reaoval job can be accoaplished in a safe and satisfactory aanner. 1.

SINTERED METAL FRICTION PRODUCTS Equipment Mfg.

K- IV.