Survey File
If survey information is not provided in the Collar file, the downhole surveys for each drillhole may be contained in a Survey file.
Survey data is required when there are changes in azimuth and/or inclination down the length of the hole. If there are no surveys, the holes are assumed to be vertical.
File
Double-click (or click on the Select icon) to select the name of the Survey file.
Survey fields
Double-click (F3) in the response boxes to specify the names of the required fields in the Survey file.
Azimuth correction
An Azimuth Correction value is optional. If you need to alter the drillhole azimuths enter a correction value. See: Azimuth Correction.
Apply to first azimuth
If the correction is required for the first azimuth (usually the collar), select this option.
Sort by Hole and Depth
Select the check box to sort the Survey data by Hole ID and From/Depth.