The seismic crew
responsible for testing lines on the surrounding area chose a gravel road within
the northern border of the town of Leduc. They chose to search there for no
better reason than that it was one of the few roads in the area and that it was
about to be closed to heavy traffic due to the spring thaw. In fact, the road
was not included in Imperial Oil's exploration rights.
The results of
the test shots along the gravel road were mapped by Carl Chapman, a geophysicist at Imperial Oil. They revealed an important anomaly. There was an unexpected rise
in the cretaceous rock formation, which could indicate that oil was trapped
beneath it. This small anomaly called a "one-point high" by geologists
had no significance to Carl Chapman. Although the head geophysicist, Ray
Walters, believed that if Imperial Oil was going to drill anywhere in the Leduc
area, it should be on that anomaly.