During a successful first expedition to one of the most active earthquake fault zones on the planet, scientists unearthed initial clues to the geophysical fault properties that may underlie devastating earthquakes and tsunamis.
To keep loose sand and gravel from collapsing into the borehole, it is necessary to use well casing and screen. The screen supports the borehole walls while allowing water to enter the well; unslotted casing is placed above the screen to keep the rest of the borehole open and serve as a housing for pumping equipment.
In heaven, there’s only one drill rig. It’s perfect for every job for every drilling contractor (those who’ve made it past the pearly gates, anyway). It’s light as a feather,
According to a new study, construction industry stakeholders are increasingly recognizing green building capabilities as good – and being a necessary part of a firm’s best practices.