Document b5L059RdNYL3k5k7zjVGo22kD

AIRMAIL ^"et rn Engineering Dep't Garfield, Utah June 27th, 1942 Mr. J. "'v. English, Plant Engineer, EL PAPO, TEXAS Dear Sir: ARSEKIC BAGHOUSE Upon my return today I found your letter and estimate of June 20th together with a notice dated June 10th from Hr. Brockington that .8,000.00 had been granted in principle (P-1455). This 1s all a little puzzling ae when I left El Paco the latest word from both Mr. Labbe and Mr. Teats was that a Baghouse was unsuitable and a Cottrell would have to be used. However, forgetting that angle and simply considering the material to be uaed, you have undoubtedly picked out the cheapest type of construction and I assume that Labbe approved the use of wood. If the sides had to be actually air tight, it would, be necessary to use either concrete or brick or else cover the siding as well as the roof with roofing paper aB your 2" x 8'1 T.& G. will eventually shrink so that there will bo some leakage. Substituting 2*' x 6" T.& G. for the 2" x 8" you show would reduce this leakage considerably and the cracks could bo battened after shrinkage if necessary. It is almost impossible to get a reasonable seal between corrugated transits siding and roof *o I would rule that out unless leakage is immaterial. In addition our latest figures on traneite show a cost of about $25. per square in place and con siderably more steel would have to be provided to support it. I find nothing In tho estimate to cover the roofing and wonder If the stairs, general walkways* bag hanger and their supports and the walkways above tho bags are included. The thimble floor will require stiffener angles between the beams and 5000 pounds looks too low. I would also suggest raising the unit price to 25^ as thimbles and their attachment to the floor cost a lot more than ordinary steel work. In short for a preliminary figure to be used until drawings are prepared which are in enough detail to allow taking off quantities, I would suggest $20,000.00. Yours truly, cc:RDBradford TJV'oodside regular mail C. C. Burt ASARCO ELP OOOI144