![](https://webarchive.library.unt.edu/eot2008/20090109021441im_/http://www.crrel.usace.army.mil/images/header-random01.jpg) |
In the 1970s, CRREL contributed to the planning and building of the trans-Alaska pipeline by providing data on the engineering properties of permafrost and thaw-susceptible soils and advice on the behavior of piles in permafrost. |
![](https://webarchive.library.unt.edu/eot2008/20090109021441im_/http://www.crrel.usace.army.mil/images/header-random02.jpg) |
CRREL's mobility research program focuses on forecasting state-of-the-ground conditions and improving trafficability in adverse winter conditions. |
![](https://webarchive.library.unt.edu/eot2008/20090109021441im_/http://www.crrel.usace.army.mil/images/header-random03.jpg) |
CRREL's mobility research program has also focused its research on improbing the capability of US forces to cross ice-covered rivers in South Korea. |
![](https://webarchive.library.unt.edu/eot2008/20090109021441im_/http://www.crrel.usace.army.mil/images/header-random04.jpg) |
In 1977, CRREL developed the concept and provided technical support for the relocation and live extension of this 3300-ton early-warning radar site on teh Greenland ice cap. |
![](https://webarchive.library.unt.edu/eot2008/20090109021441im_/http://www.crrel.usace.army.mil/images/header-random05.jpg) |
Seeding an ice cover in the Test Basin in the Ice Engineering Facility in preparation for an "ice forces on structures model" test. |
![](https://webarchive.library.unt.edu/eot2008/20090109021441im_/http://www.crrel.usace.army.mil/images/header-random06.jpg) |
A tracked Bobcat is used to knock down and smooth out the snow piles before testing can begin in the Ice Engineering Research Facility Research Area. |
![](https://webarchive.library.unt.edu/eot2008/20090109021441im_/http://www.crrel.usace.army.mil/images/header-random07.jpg) |
Evaluating the effectiveness of using surfactants to herd oil in ice-infested water on the refrigerated Test Basin in the Ice Engineering Facility. |
![](https://webarchive.library.unt.edu/eot2008/20090109021441im_/http://www.crrel.usace.army.mil/images/header-random08.jpg) |
A test is being conducted in the refrigerated Flume in the Ice Engineering Facility to evaluate the effectiveness of river training structures in shallow streams in cold regions. |
![](https://webarchive.library.unt.edu/eot2008/20090109021441im_/http://www.crrel.usace.army.mil/images/header-random09.jpg) |
Ice is being harvested from an outside pond for testing with oil. |