| Categorie personal | 2015 | 2016 | 2017 | 2018 | 2019 |
| Personal tehnic cu studii superioare Technical staf with tertiary education |
266 |
253 | 227 | 171 | 143(14,26%) |
|
lngineri/Bachelor of Science of Engineering
|
240
26 |
227
26 |
209
18 |
159
12 |
131
12 |
| Personal tehnic cu studii medii Technical staf with secondary education |
81 | 71 | 61 | 46 | 37(3,69%) |
|
Maiștri/Foremen Tehnicieni/Technicians |
39 42 |
32 42 |
28 33 |
26 20 |
20 17 |
| Personal economic cu studii superioare Economic staff with tertiary education |
57 | 54 | 52 | 45 | 39(3,89%) |
| Personal economic cu studii medii Economic staff with secondary education |
14 | 18 | 20 | 14 | 12(0,70%) |
| Personal execuție/Execution staff | 1495 | 1220 | 1195 | 862 | 726(72,38%) |
| Alte categorii/Others | 108 | 105 | 94 | 67 | 52(5,18%) |
| TOTAL | 2021 | 1715 | 1643 | 1199 | 1003 |
