Buffalo, Miami, and Tampa, Fla., for physical tests of 
cement, concrete, sand, stone, metals of all kinds, wood, mat- 
erials used in highway construction, building materials and 
for boiler tests, power plant tests and other engineering 
problems. 
The present officers of the Pittsburgh Testing Labora- 
tory are: George T. Ladd, chairman of the board; James 
Milliken, president; F. V. Green, vice president; F. O. Gard- 
aer, secretary-treasurer, and A. R. Ellis, general manager. 
The directors include George T. Ladd, James Milliken, 
D. Frank Crawford, C. H. Curry, George H. Clapp, F. F. 
Brooks. A. R. Ellis. and John C. Slack. 
PITTSBURGH TRANSFORMER COMPANY 
The Pittsburgh Transformer Company is a Pennsylva- 
nia corporation and a peculiarly Pittsburgh institution 
throughout. Its plants and head offices are in Pittsburgh, 
owned in Pittsburgh, and all the employees are native Pitts- 
burghers. All officers are Pittsburghers. Over ninety per 
cent of the raw materials used are manufactured in Pitts- 
yurgh. 
This company’s business in 1901 was $20,000 a year. 
The business today occupies five complete city blocks, cov- 
ered with the most modern factories and equipped with the 
most modern and efficient machinery for the manufacture 
of all parts of transformers. This company is the only 
company in the world that manufactures all its parts, except 
accessories. No other company manufactures all its elec- 
trical parts and also all of its tanks, radiators and fabricated 
steel, which Pittsburgh Transformer Company does in its 
rarious North Side plants. 
The gross sales of the Company have grown in twenty- 
five years from $20,000 per annum to $6,000,000 per annum, 
and the company now is the largest independent manufac- 
turer of transformers in the United States, with a total num- 
her of employees of over six hundred. 
An interesting point here may be noted in reference to 
wages paid by Pittsburgh Transformer Companv. The