Guidelines in the Conduct of Core Drilling on Asphalt and Concrete Pavement. Category: Department OrderSub Category: construction-materialsSeries: 1983No: 59File: DO_059_S1983.pdfDate: Tuesday, August 30, 1983Tags: Guidelines Core Drilling Asphalt Concrete Pavement materials 059 Read more about Guidelines in the Conduct of Core Drilling on Asphalt and Concrete Pavement.