anodont dentition - argyrodite
- apply force
- apply gradient array
- apply to smb.
- applying force
- appoach length
- apposition fabric
- appraisal
- appraisal drilling
- appraisal program
- appraisal survey
- appraisal well
- apprentice-driller
- apprentice-hewer
- approach
- approach channel
- approach velocity
- approval for underground use
- approved
- approved cable
- approximate contour