| hydraulic fracturing chemicals | 1.97 | 0.6 | 7653 | 30 | 17 |
| hydraulic fracturing chemical leaks | 0.18 | 0.2 | 8315 | 35 | 42 |
| hydraulic fracturing chemical disclosure | 0.36 | 0.8 | 9069 | 40 | 97 |
| chemicals used in hydraulic fracturing | 1.09 | 0.7 | 4120 | 38 | 40 |
| hydraulic fracturing vs chemicals fracturing | 1.93 | 0.8 | 9255 | 44 | 24 |
| chemical found hydraulic fracturing | 0.37 | 0.7 | 1860 | 35 | 66 |
| chemical interactions hydraulic fracturing | 1.05 | 0.5 | 2757 | 42 | 45 |
| problems with hydraulic fracturing | 1.7 | 0.3 | 639 | 34 | 65 |
| hydraulic fracturing fracking and shale gas | 1.9 | 0.8 | 7438 | 43 | 31 |
| why is hydraulic fracturing bad | 1.04 | 0.8 | 563 | 31 | 80 |
| hydraulic fracturing shale gas | 1.65 | 0.7 | 4768 | 30 | 13 |
| hydraulic fracturing fact sheet | 1.78 | 0.9 | 642 | 31 | 66 |
| epa sued over hydraulic fracturing | 0.49 | 0.8 | 9784 | 34 | 87 |
| hydraulic fracturing oil and gas | 0.32 | 0.7 | 7920 | 32 | 67 |
| facts about hydraulic fracturing | 0.76 | 0.2 | 1783 | 32 | 60 |
| what is hydraulic fracturing | 1.6 | 0.1 | 8006 | 28 | 67 |
| hydraulic fracturing environmental impact | 1.44 | 0.1 | 4600 | 41 | 36 |
| hydraulic fracturing in soils and rocks | 0.56 | 0.1 | 8426 | 39 | 49 |
| problems with hydraulic fracking | 0.51 | 0.5 | 9805 | 32 | 28 |
| complex fluids and hydraulic fracturing | 1.55 | 0.5 | 9772 | 39 | 90 |
| consequences of hydraulic fracturing | 1.48 | 0.6 | 8635 | 36 | 32 |
| mechanics of hydraulic fracturing | 1 | 0.1 | 7557 | 33 | 15 |
| hydraulic fracturing natural gas | 0.35 | 0.6 | 1969 | 32 | 23 |
| hydraulic fracturing & health | 0.03 | 1 | 3024 | 29 | 8 |
| rock mechanics of hydraulic fracturing | 0.36 | 1 | 6892 | 38 | 84 |
| effects of hydraulic fracturing | 1.32 | 1 | 3826 | 31 | 60 |
| epa hydraulic fracturing study | 1.69 | 0.6 | 7351 | 30 | 99 |
| what is hydraulic fracking | 1.57 | 0.4 | 2482 | 26 | 76 |
