Table 1 Basic information of the questionnaire respondents.
Category | Group | Number | Percentage |
|---|---|---|---|
Gender | Male | 84 | 89.3 |
Female | 10 | 10.6 | |
Age | 18–25 years | 5 | 5.3 |
26–30 years | 12 | 12.7 | |
31–40 years | 24 | 25.5 | |
41–50 years | 42 | 44.6 | |
51–60 years | 11 | 11.7 | |
Occupation | Mine rescue specialist | 5 | 5.3 |
Firefighter | 2 | 2.1 | |
Rescue equipment R & D | 8 | 8.5 | |
Mine safety management | 5 | 5.3 | |
Miner | 74 | 78.7 |
