Project Manager, Chief Engineer, and members of the engineering staff of the firm attended and set in motion the first phases of the evaluation program. After many factors had been considered and the relative merits of various binders discussed in great detail, the decision was reached that tests be conducted on Parry Island using several types of asphaltic materials, namely: hot—mix with liquid asphaltic MO-3, cold-mix with MC-3, Bitumuls HX, and Bitumuls HRM, the latter two being emulsified asphalts, Sufficient quantities of the materials were shipped to the Jobsite and the tests were conducted during December of 1949 and January of 1950. These were augmented by an additional test with Amalga-Pave, a patented process using powdered asphalt and a flux oil. Presented below is a brief outline of the materials and procedures followed in performing the Jobsite tests. Test Section No, 1 One 50 foot by 50 foot section of macadam (HX Bitumuls) was laid. Two-inch crushed rock was spread over the area and rolled with two passes of a 10 ton 3-wheel roller. One gallon per square yard of 150-200 asphalt emulsion HX was sprayed over the rock, and l-inch small crushed rock spread over the test section and sprayed with one gallon per square yard of the emulsified asphalt. The test section was then broom sanded and rolled with one pass of the same roller, Section One 50 foot by 50 foot section (HRM Bitumuls) was laid. The material was mixed in a small pug mill, and aggregate and binder were weighed on scales. Three strips were laid with proportions and mixing as follows: Strip 60 per cent small crushed rock 40 per cent beachsand 6 per cent Bitunuls These were mixed in pug mill, sand and Bitumuls added to rock, and batch mixed 3 to 5 minutes. The batch was then dumped on a platform and stockpiled for two days, after which it was laid by the Barber-Greene paver in the conventional manner. The test section was rolled with 2 passes of a 10 ton 3wheeled roller at the time of laying. 5-261