Tframhw 6,D.

BOX 665 ARCATA. CAIIF..

DOUGLAS FIR, R,EDWOOD

QUATITY BAND .sAWN IUTI,IBER

DEPENDABIE SERVICE

TRUCK & TRAILER

RAIL

9AtE5 OFFICE:

928 H Street

ARGATA, Galif.

Phone; VAndyke 2-O3l I

Tltt/X; AR.C 17 fillllS ond PIAN|NG 'YIILI Smith River, Colifornis cement industry, which regards the control system as a major move toward automation in the manufacture of cement.

The system was designed jointly by Lewis A. Parsons, Calaveras consulting engineer, and Mel C. Sutton, Calaveras chief chemist, with the technical assistance of Nels S.wanson. It provides, for the first time, a method of measuring the temperature of the mix in the calcining zor,.e of the kiln, approximately 110 feet from the start of the burning zone. Temperatures in this area average 14000 F. Changes in the mix temperature, as noted by the instruments, bring about immediate compensating changes in fuel and air flows to keep the burning process uniform.

Until now this phase of cement manufacture has required the attention of an operator skilled in estimating temperatures in the calcining area by comparing the recorded temperatures at feed and burning ends of the kiln. The operator would then make manual adjustment of fuel and air flows. The new system of precisiort control makes possible a uniformity of production not previously attainable

Koiser Fir-Tex Acousticql Tiles lncreqsed By Two New Pqtterns

CARGO

Henry ftl. Hink

I lO7 Merchonts Exchqnge Bldg. Ssn Frqnclsco, Golifornic

Phone: YUkon 6-5421 new patterns will round out the company's line of fiber acoustical and decorative tiles. These are the new regular pattern tile, increased to 529 perforations per square foot, and the casual pattern tile with an eye-appealing random pattern of 316 perforations in three different diameters.

All tile patterns have been redesigned for improved appearance and ease of installation, with sound absorbing qualities boosted through lower tile density, Campbell said.

The acoustical line will feature new clean-cut perfora- tions, narrower margins, smaller painted bevels and smoother surface, producing a more continuous perforated patterned ceiling. Now being manufactured at the St, Helens, Oregon, plant of Kaiser Gypsum, the tiles have white washable or white washable flame resistant finishes.

They are available, with butt joint, in the following modules ; l2"xl7', l7'x24" cross-scored and 2('x24t ii thicknesses of fir, 5/8", /4" and. lt'. The 1" thickness is also available in a 24'x4U' size.

The butt joint tile, kerfed for splines or kerfed and cut back for mechanical suspension, is available in lV'x17, and, l7'and 24' cross-scored sizes in 3/+r, and It, thicknesses. The new Firlok joint is a feature of the rlt, tiles.

For additional product information,' write to Kaiser Gypsum Company,-Inc., fnsulating Products Division, 1924 Broadway, Oakland 12, California.

A new and complete line of Kaiser Fir-Tex acoustical tiles is now on the market, announces Colin Campbell, ger-reral sales manager of Kaiser Gypsum Company, Inc. Two (Tell thern you soa!) it in The California Lumber Merchant)