Reaching the bedrock that can carry the heavy load of skyscrapers may require deep drilling or pile-driving.
12.
He served in sapper units, was the commander of individual detachment of deep drilling of a sapper battalion.
13.
He likes Nabors Industries of Houston, a driller that has 30 percent of the market for land-based deep drilling rigs.
14.
This method is often large scale as the system required to harness geothermal energy can be complex and requires deep drilling equipment.
15.
In the 19th century, the advancement in deep drilling and medical science provided the springboard for a further leap in bathing culture.
16.
Major investments include the subsidiary Deep Drilling Invest that has eight drilling rigs under construction and Beta Drilling that operates one rig.
17.
Second, a survey of the region showed a rock structure suitable for deep drilling, and nearby sites met low levels of sedimentary cover.
18.
If the possibility of finding Martian life or subsurface water requires deep drilling, it may require the adaptability and intelligence of humans, they said.
19.
A major deep drilling project has begun in Antarctica to unlock the secrets of global climate change going back millions of years, organizers said Thursday.
20.
But due to scattered drilling and lack of deep drilling on this property, this high-grade zone is probably much more extensive along strike and depth.
