Summary of quarters, allowance and pay received by Wilson.

Before 1974, stripping in hot mix asphalt concrete was considered to be a relatively minor problem in Oregon. During the three-year period from 1974 to 1977, several problems were noted during and after construction of asphalt pavements. One of the major problems associated with asphalt pavements was its initial reduced resistance to raveling. This problem developed after the oil embargo in 1974. In recent years, problems with stripping and associated pavement deterioration have continued such that in 1983 amine-type antistrip agents were incorporated into over 20% of all projects constructed.