TUMORS OF THE SKIN ioi multiple pitch cancer, described by the same investigator, a corkstone worker first showed a cancer on the corner of the eye, followed by a cancer on the lower lid, which, in turn, was succeeded by an epithelioma on the other eyelid.

TUMORS OF THE UROGENOUS ORGANS 47i workers, dye mixers, workers in explosives and rubber, and other nonspecified chemical operations) in England and Wales during 1921 to 1928.

INDEX VOLUME I..

104 CHAPTER 4 years, 40 percent of all workers in a Griesheimer chemical plant (where chromium sulfate and other industrial chemicals were pro duced) had developed lung cancer.

Page 1809 1 mesothelioma occurs over a many-year period and all of 2 the asbestos contributes to the development of the 3 tumor, as we understand, by the mechanism of cancer 4 development. 5 One could maybe wonder about when the tumor 6 actually started and nobody knows that for certain, 7 but most data suggests that it starts many, many years 8 before a person clinically presents with the tumor. 9 It probably was there 10 years before he 10 developed symptoms and maybe longer. 11 Q Ten years before symptoms would have been 12 sometime in 1928?

NEG.NO.

NEG.NO.

i' LJ c/la i *--"/ Hydraulics equipment with flammable petroleum oil as the working fluid began its real growth in the late 1920's and early 1930*c because hydraulics were a lightweight, efficient and economical means of transferring power.

34 PENNSYLVANIA LaDOK AND INDUSTRY REVIEW Advances Made in the Making of Steel Advances in metallurgy have produced steels more perfectly adapted to the demands of the engineers--hence more efficiency.

' Int er -Office Cor r espondence Et hyl Gasol ine Corporat ion , 25 BROADWAY N e w Y o r k January 29, 1929.

13 AUTOPSY Cad a .'

December 7, 1929 Mr* IC* S.

o t March 12* 1929 Acacia Mutual Life Assn., 101 Indiana Avenue, Washington, D.

November 29 1929 Mr*-?

'51 i i " *VaS 8t*tea*nt oc behalf of UAD WC09TWDE3 ASSOCIATE* 292 fedlsco Avenue Eev Tort, I.