[en] Th East Chaco Canyon drilling project was conducted in support of the National Uranium Resource Evaluation (NURE) program. This project consisted of 15 drill holes ranging in depth from 4,248 to 5,130 feet. A total of 70,421 feet were drilled, of which 4,933 feet were cored. Objective of the project was to test the uranium potential of the Morrison Formation (Jurassic) in an area where the Westwater Canyon Member contains thick sandstone units and where industry was unlikely to drill in the near future. This report presents individual borehole histories of the 15 holes