east dip - enantiomorphous
- ecological maps
- ecological situation
- ecological succession
- ecology
- economic
- economic analysis of the feasibility study is based upon the following premises
- economic geology
- economic maps
- economic minerals
- economic orebodies
- economic value
- economic yield
- economically viable
- ecophenotype
- ecospace
- ecospecies
- ecostratigraphic
- ecostratigraphy
- ecosystem
- ecotone