Pipe Materials in Calgary Presentation Slide #16

We could at least take solace by 1976 that we had started installing YDI and begun a cathodic protection program requiring an anode install at every repair site, and for 1976 and 1977 the break rate overall held about even, but it continued to concentrate in this area, with new breaks appearing in the DI areas at the north end of it that were only a few years old.