| indiana osha for underground construction | 1.18 | 0.9 | 2729 | 41 | 60 |
| indiana department of labor osha | 0.83 | 0.5 | 5793 | 32 | 8 |
| osha underground inspection requirements | 0.37 | 1 | 2323 | 40 | 78 |
| indiana osha 300 log | 0.68 | 0.2 | 222 | 20 | 51 |
| osha underground building requirements | 1.15 | 0.5 | 7872 | 38 | 65 |
| osha guide for the construction industry | 1.01 | 0.8 | 3235 | 40 | 18 |
| osha underground utility safety | 0.91 | 0.3 | 1591 | 31 | 84 |
| osha underground work requirements | 1.01 | 0.3 | 121 | 34 | 6 |
| indiana osha state plan | 0.82 | 0.6 | 1149 | 23 | 87 |
| osha construction industry regulations | 1.38 | 0.4 | 7501 | 38 | 84 |
| introduction to osha construction | 1.96 | 0.6 | 131 | 33 | 64 |
