CALENDAR OF CIVIC CELEBRATIONS

Page Eight ARIZONA HIGHWAYS APRIL, 1931 Oil Surfaced Roads Test Subgrade for Future Surfaces Calendar of Civic Celebrations

(Continued from page 5) as soon as the subgrade condition which is made so apparent by this type of construction is mastered, it is then time to start the determinations of the length of its useful and economical life. Assuming that the oil-cake is properly constructed and maintained as to materials and operations and subgrade corrections etc. respectively; the oil cake should not, and the opinion here is that it will not, deteriorate under ordinary heavy traffic. The life of it will vary directly with the amount of traffic and if reconstruction is not well timed, the oiled road will give way to wear and tear. This should not be allowed to happen for this reason an oil surfaced road, although having served the greater part of its usefulness as a splendid traffic-way, still possesses a great value as a thoroughly tested base for the next stage of construction. The timing of this next stage of construction is very important for this reason. If the proper timing of the next stage of construction is not made, it will result in much waste to the tax-payer and unlimited inconvenience to the traveling public. It can be stated with confidence that an oil surfaced road, not completely worn out, if topped with a high grade wearing surface will last as long as and at half the cost of a reconstruction job The following celebrations and conventions to be held in Arizona in the near future were compiled from reports to the Arizona Industrial Congress: April 16-18-Douglas. Arizona Federation of Music Clubs Convention.

April 17-18-Tucson. Statewide "Buyers and Sellers" Convention.

April 18-Tucson. "Romance of the Old Pueblo" Pageant.

April 20-22-Douglas. I. O. O. F. State Convention.

April 24-Safford. Red Knolls Pageant.

April 24-25-Safford. State Convention Lions' Club.

April 24-25-Douglas. Arizona Postmasters' Association Convention.

April 25-26-Nogales. Arizona Association of Optometrists's Convention.

April 27-May 2-Phoenix. 14th Biennial (National) Council Meeting, General Federation of Women's Clubs.

April -Nogales. Arizona Social Workers Convention.

April 28-May 2-Phoenix. National Conference, General Federation of Women's Clubs.

April 30-Phoenix. Masque of the Yellow Moon.

May 5-6-Nogales. Arizona Public Health Association Convention.

May 7-9-Nogales. 40th Annual Convention Arizona State Medical Association.

May 9-10-Prescott. Federal Employes Convention.

May 22-23-Douglas. Elks State Convention.

May-Douglas. Knight's of Columbus State Convention.

June 14-Prescott. Smoki Ceremonials.

June 15-Grand Canyon. Arizona Association of Commercial Secretaries Meeting.

June 18-19-Prescott. National meeting Alpha Gamma chapter of Sigma Phi Gamma. (Includes one-day trip to Nogales.) July 2-5-Prescott. Prescott Frontier Days.

July 2-5-Prescott. Northern Arizona State Fair.

July 3-5-Winslow. "Meteor City Roundup."

October 29-30-Glendale. Glendale District Fair.

October-Yuma. "'49 Camp" and Rodeo.

November 9-14-Phoenix. Arizona State Fair.

November 11-Yuma. Pecan Day Celebration.

December 21-Yuma. Sunshine Congress.

It made necessary if the same oil surfaced road is allowed to give way to wear and tear, to say nothing about the inconvenience to the traveling public.

In the foregoing article, the writer refers to oil surfaced roads as those constructed in Arizona. They have been constructed by both the Road and Plant Mix Methods and the same conclusions go for both types.

constructed in Arizona. They have been constructed by both the Road and Plant Mix Methods and the same conclusions go for both types.

(This is the third of a series of articles by Mr. Shaffer.)