Sprinkle Treatment of Asphalt Pavements, MLR-78-01, 1978

The paper reviews methods, materials, equipment and results to date of sprinkle treatment within the state. The Iowa Department of Transportation formerly the Iowa State Highway Commission, made its first attempts at sprinkle treatment of fresh asphalt concrete in 1974. Increased emphasis in mix design of asphalt mixes and aggregate selection of durable non-polishing materials has generated costly restrictions on the use of local materials. During the summer of 1975, a dual spinner, tail-gate spreader was mounted on a standard departmental dump truck to attempt additional sprinkle treatment on a section of Iowa 7 west of Ft. Dodge. The dump truck equipment was marginally satisfactory, but results of increased surface skid texture and durability were well demonstrated. On 1976 a new, current order dump truck was modified with an auxiliary transmission and a set of slick surfaced tires, and dual spinner spreader was mounted to again attempt surface sprinkle treatment, which was conducted in 1977.

Iowa Civil Rights Commission Biennial Report, July 1, 1976 - June 30, 1978

Annual report for the Iowa Civil Rights Commission

Iowa Civil Rights Commission Annual Report, 1974

Annual report for the Iowa Civil Rights Commission

Executive Order Number Nineteen, February 1974

Amend Executive Order #17

Executive Order Number Thirty One, June 1978

Renew mandate of voluntary Iowa Council for Children.

Executive Order Number Thirty Two, July 1978

Establish a system to provide credit for the compensation of employees who have accrued sick leave.

Executive Order Number Thirty Three, November 1978

Establish the Iowa Office for Volunteerism.

Executive Order Number Thirty Four, November 1978

Establish the Iowa Commission on the International Year of the Child.

Executive Order Number Thirty Four, November 1978

Establish the Iowa Commission on the International Year of the Child.

Iowa Forestry Bulletin,1974.

A listing of district foresters and state forest facilities.

Degradation and aggradation of the Missouri River, June 1978.

Proceedings of a workshop held in Omaha, Nebraska, 22-25 January, 1978. Edited by W.W. Sayre and J.F. Kennedy. Iowa Conservation Commission. IIHR Report No. 215. Iowa Institute of Hydraulic Research, the University of Iowa, Iowa City, Iowa.

1974 Survey of Dentists

This 1974 Survey of Dentists shows the number of dentists actively practicing in Iowa by county, age group, and type of practice.

State of Iowa Transportation Map, 1974

This document is the State Map of Iowa, both front and back of the year in the title. All maps were are in pdf format and can be used as a historical reference.

State of Iowa Transportation Map, 1978

This document is the State Map of Iowa, both front and back of the year in the title. All maps were are in pdf format and can be used as a historical reference.

Inventory of County Records : Appanoose County, 1978.

This is an inventory of public records from Appanoose County. The State Historical Society of Iowa received funding from the National Historical Publications and Records Commission along with 5 other Iowa counties for this two year study.