Expts. were perimental lead poisoning.

Uses of/^oclbr&--^ which lead to environmental contamination and cannot be controlled will be discontinued.

Thb should be ac complished by restriction, rather than by isolation of the air, as the latter method will lead to a troublesome frost condition Surface temperature depressions of 4 F deg below ambient to a 70 F room should be acceptable.

Acute toxicity studies, no mat ter how precisely executed, yield no more than an indication of the degree of necessary to protect workers or lead to an opinion that certain technically E|asible applications of a chemical may or may not eventually be proved safe. " This type of toxicity test procedure is utilized to obtain information ^<C]Qjr precautionary labeling of hazardous household chemicals.

Industrial Hygiene Digest August, 1960 HMBB-0018633 MANAGEMENT ASPECTS 815 Organizational Health and Executive Development.

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240 CHAPTER 16 1960 Guide use of air-conditioning psychrometric techniques is only re quired for accurate humidity control.

In truck-andtray tunnel dehydrators the product on top and along the leading edge of the trays will over-dry as compared with the material in the center of the tray bed.

i* ' Nevertheless, our observation of the operations leads us to make the following r > recommendations: .

ENGINEERING The DNT plant was essentially completed except for tracing and insulation on the lines leading from the check tanks to storage and loading at month end.

BUSINESS CONFIDENTIAL MEMORANDUM MONTHLY REPORT TO: Dr.

Soft metals such as lead and brass improve wear while carbon and graphite serve u friction modifiers.

TMRO reon- mo- O.B.RJ*. n ve* q no SHEET I OP 4' SHEETS DISTRIBUTION COPY k nf*p*prT j LEAD YARD ORDER'NO.

To make the new catalyst, says the company, a standard trichlorinated titanium product is reduced in an or- gano-aluminum solution, then a complexing agent is added followed by a dose of quadrichlorated tita nium--the very product that usually leads to atactic polymer.

.** Hypertbyroid chickens can with stand high temperatures better than hypothyroid chickens.17 Ammonia has been observed as a serious problem in poultry shelters and high concentrations lead to reduced production and even death.