"In early September, 1981, core from three drill holes (CH133, 2HP-173, and 2HP-174) was taken from Laramie to Golden for preparation of standard specimens (2.54x2.54 cm cylinders) for paleomagnetic measurements. The pieces of drill core were drilled perpendicular to their axis; with large pieces of core, several specimens were prepared (8-10 or more) from each piece. A breakdown of the number of cylinders collected over specific drilling intervals from each hole is given in Table 1. In some instances, the core is so fragile or so poorly consolidated that standard drilling techniques did little to retrieve cylinders. In these cases, whole (small) portions of core were retained and cubical specimens prepared to fit into small, plastic boxes which could be measured directly. The burned material collected from the Hoe Creek sites was simply bagged as coarse grit during the field drilling procedures. In these cases, a small vial (approx. 100 cc) of material was collected from each bag. CH133, the section cored prior to any underground gasification experiments, was sampled and is being studied in hopes of compiling a ""standard"" section of paleomagnetic and rock magnetic data to compare with results from core taken from holes near the underground burns. Cores 2HP-173 and 2HP-174 were drilled, respectively, at the edge and directly above the Hanna II Phase 2 and 3 site. We anticipated that the data from these cores would exemplify the potential variations in magnetic properties as a function of proximity to a burn."