Hellings, Jan
Main board
| Organisation | Position | From | Until | ||
|---|---|---|---|---|---|
| 1 | ASSOCIATION OF GEOTECHNICAL AND GEOENVIRONMENTAL SPECIALISTS | DirDirector | 1998-03-18 | 2003-03-19 | |
| 2 | BURA | DirDirector | 2001-03-08 | 2012-08-28 |
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