382 CHAPTER 18 1949 Guide Other items to be considered in boiler selection are : a.

542 CHAPTER 25 1949 Guide fication required is also highly Variable.'

670 CHAPTER 34 1949 Guide under the command of zone controllers.

830 CHAPTER 41 1949' Guide not only if the duct passes through unconditioned space, but also on long duct runs within conditioned space.

852 CHAPTER 42 1949 Guide) ample acoustical treatment.

138 CHAPTER 7 19S0 Guide became bactericidal and retained this property for as long as three months.

Con kidksti al ^Iellon Institute of Industrial Researc UNIVERSITY OF PITTSBURGH PLAINTIFF'S EXHIBIT PROGRESS REPORT for the T.

( \RCH ADVISORY COUNCIL ..................Industrial Hygiene Foundation, Pit .........................................Mellon Institute, Pit . . .

Industrial Hygiene Digest - 34 i August, lou (1) Improved cooperation of the patient, the physician, the employer, am his Terrier, ar.d the State Industrial Commission; (2) Temporary 9'~ transfer of the vorker to another Job; (3) Careful preemployment examine, < tlops.

Human Factors Engineering Fig 5-14 --Top Shape Coding Two sets of knobs for levers that are distinguishable by touch alone Bottom Texture coding Ten texture codings that can be distinguished Courtesy Department of the Air Force, Wnght-Patterson AFB Top W O Jenkins, Psychological Research on Equip ment Design Research Report 19, 1947 Bottom J V Bradley, Tactual Coding of Cylindrical Knobs, Tech Report 59-182 1959 to nearly everyone in the population Some examples are given in Fig 5-13 Any display-response that calls for a move ment contrary to the established stereotype is bound to produce errors The designer is calling for'errors by asking the operator to change, in this or that unique situation, a be havior pattern that can be described as habit If an operator misreads a poorly designed display and operates the wrong control or the right control in the wrong direction, safety may be jeopardized, and the system effective ness degraded, if not lost entirely Despite the fact that many accident reports would classify this as an "unsafe act" or hu man error, it is, in fact, a design error Re- 116

V Q Y\ y PLAINTIFF'S i EXHIBIT f August 14, 1946 Mr.

L:' / ri<i.iL hOCHbuLL, Lancs.

j NO p 2922 A j cu^. m / HtTt I ASBESTOS (Possibility for Air Transport) DECLAS jtfiEO *. pR/tUl '**- w Division of Stockpiling and Transport .tion Nar Production Board Prepared by R.

January 9, 1948 Kr.

PLAINTIFFS EXHIBIT aDVISCRI EDgCf.TICh'iuli GFCOP December 30, 1947 GP.COP III - HCr CIS WE STRENGTHEN CUP RELATIONSHIPS WITH PROFESSIONAL GROUPS?