diameter natural gas pipeline running from Opal, Wyoming, to Malin, Oregon.

filed an application with the Federal Energy Regulatory Commission (FERC) on January 27, 2009, authorizing the construction and operation of the Ruby Pipeline Project.

The pipe is 680 miles (1,090 km) long with an expected capacity of 1.5 billion cubic feet per day (42×10^6 m3/d).

There is concern that the project crosses more than 1000 rivers and streams and, according to the Center for Biological Diversity, threatens some endangered fish species.

[2] The Center for Biological Diversity and Summit Lake Paiute Tribe of Nevada petitioned the Ninth Circuit Court of Appeals for an emergency action blocking the pipeline.