Operating geology may not seem as exciting and glamourous as exploration, especially to recent graduates, but it has its advantages as listed below:
- Stability: Exploration is generally the first activity curtailed in recessive periods.
- Satisfaction: The results of good work are visible sooner and more often.
- Family life is relatively normal.
Geological work at an operating mine deals with basic data and may be divided into the following four categories:
- Recording (mapping, logging, sampling).
- Posting (plans, sections).
- Interpretation (projection, descriptive geometry, computer modeling).
- Effectively “selling” your interpretations to management (development headings and/ or drilling, avoidance of incompetent ground, locating ore, etc.).
Procedure for Mapping
The following data are recorded by noting rib location normal to the tape (the Brunton should never be used to determine strike in a mine).
a) Faulting – properly weighted to indicate magnitude of movement (the amount and type of gouge is strongly influenced by rock type and/or pre-fault alteration).
c) Rock type (employ a continuous, rather than spot, description).
d) All notes are horizontal – light guide lines should be drawn and erased later.
e) Dip symbols should employ arrowheads three times as long as they are wide at the base and closed. All dip symbols should be of