| 11. | In 1905, he helped found the journal Economic Geology.
|
| 12. | More interesting is the observation of Sigrid Clift, University of Texas Bureau of Economic Geology geologist.
|
| 13. | Economic geology is studied and practiced by geologists.
|
| 14. | L . C . Graton occupied a pre-eminent position in economic geology for half a century.
|
| 15. | His PhD was on the structure, stratigraphy and economic geology of the Bristol and Somerset Coalfields.
|
| 16. | Half Zantop, a professor of economic geology, took frequent field trips to Mexico and South America.
|
| 17. | The Houston center will be under the direction of the University's 93-year old Bureau of Economic Geology.
|
| 18. | In 1907, he took the Chair of economic geology at the Sheffield Scientific School at Yale University.
|
| 19. | In 1931 he published a paper in " Economic Geology " on the history of gem mining.
|
| 20. | His work was in economic geology, the study of valuable metals such as copper, gold, and silver.
|
