* 40 (Actual epic skill 22.54): Detect salt when present
* 60 (Actual epic skill 36.75): Estimate the remaining amount of ore in a vein
* 80 (55.28 Effective epic skill 96.00) Exact quality (overrides prospecting 20 message)* 90 (68.38 Effective epic skill 99.00) Exact remaining hits (overrides prospecting 60 message)
The same abilities are available when prospecting the vein inside the mine.