The business was started in the Schmidt Building in Fifth 
avenue, the chemical laboratory located at the old Carbon 
[ron Works and the Physical Laboratory was later moved 
to the basement of the Fitzsimmons Building in Fourth 
wvenue. 
Later on, all departments were grouped at 325 Water 
street, where the business remained for 22 years. In 1910, 
‘heir own building was erected at Seventh and Bedford 
avenues, which property they still own. 
The rapid growth of the business, extending to every form 
of inspection, analysis, special research and physical test- 
ing, made it necessary to move into still larger quarters in 
1923, purchasing at that time the old Newboys’ Home, at 
the corner of Stevenson and Locust streets, and now occupy- 
ing the entire property. 
The present organization and service of the Pittsburgh 
Testing Laboratory embraces the following departments: 
General Inspection Department: This comprises a 
properly organized corps of accredited inspectors, in indus- 
trial centers, for the inspection of steel and iron products 
used in buildings, bridges, rails, cars, locomotives, special 
machinery, tanks, steel and iron pipes, hydro-electric equip- 
ment, wire, transmission towers. etc. 
Department of Research and Special Investigation: 
This service includes research along chemical and engineering 
lines, in developing new products, in lowering costs of manu- 
facture and in investigating various industrial problems; 
experts in patent litigation, along metallurgical and chem- 
ical lines, as well as investigations of mining properties and 
mineralogical surveys. 
Chemical Department: Well equipped laboratories are 
located at Pittsburgh, New York, and Birmingham, Ala., 
for conducting chemical tests and investigations, involving 
‘errous and non-ferrous metals, asphalts, clays, silicates 
(glass), coal, gas, oil, paint, ores, lubricants. alloys, water, 
food products of all kinds. 
Physical Testing Department: Well equipped labora- 
tories are also located at Pittsburgh, New York, Birming- 
ham, Ala., Dallas, Tex., Chicago, Detroit, Cleveland.