Hacker News
new
|
past
|
comments
|
ask
|
show
|
jobs
|
submit
login
dreen
on Dec 20, 2013
|
parent
|
context
|
favorite
| on:
Under Seattle, a Big Object Blocks Bertha. What Is...
So what is the typical procedure when encountering a large boulder? Get people there and just drill through it manually? Or would they have to completely remove the entire boulder? (how?)
abduhl
on Dec 20, 2013
[–]
Access the face and bust up the obstruction so that it can be ingested or sink a shaft and remove the obstruction vertically.
Guidelines
|
FAQ
|
Lists
|
API
|
Security
|
Legal
|
Apply to YC
|
Contact
Search: