The companies with whom I am associated in Canada have, during the past 20 years, experimented with or used almost every kind of protective coating on the market. After burying duplicate pipe nipples covered with many different varieties of recommended paints, enamels and coatings for extended periods in highly corrosive soils, as well as carrying out accelerated tests and similar practices followed by other companies, we have for the time being adopted coal tar enamels exclusively as a protective coating for all of our underground steel pipe.
Before proceeding further it might be interesting to those of you who are not familiar with conditions in Western Canada, to relate briefly some statistics pertaining to our major natural gas companies. Although there are a number of communities supplied with natural gas in the Province of Alberta, the cities of Edmonton and Calgary are the two largest centers, and these are the...
