| 31. | Eventually they tunnel out, boring holes in the trunks.
|
| 32. | Another form of intrusive research is bore holes.
|
| 33. | Underground drilling rigs bore holes in the ore face, which are charged with explosives and fired.
|
| 34. | The survey used new methods to bore holes in the limestone rock and extract a core.
|
| 35. | Technology for permanently sealing large-bore hole walls against water infiltration or fracture does not currently exist.
|
| 36. | Bore holes are drilled into the strata and water is forced down to dissolve the salt.
|
| 37. | A few species bore holes in wood dwellings.
|
| 38. | Maple trees can be tapped by boring holes into their trunks and collecting the exuded sap.
|
| 39. | Nor is it understood precisely why boring holes in the heart helps lessen or eliminate the pain.
|
| 40. | The RAT then uses two brushes to sweep dust from the bore holes for closer scientific inspection.
|
