BOISE, Idaho -

Attorneys for the Nez Perce Tribe and a company that wants to ship huge loads of equipment through a national forest -- and across reservation land -- are taking their arguments to federal court.

Oral arguments were expected Monday afternoon in the lawsuit brought by the Nez Perce Tribe and Idaho Rivers United against the U.S. Forest Service and Resources Conservation Company International.

The tribe and environmental group are asking U.S. District Judge B. Lynn Winmill to issue a preliminary injunction stopping large shipments of oil field equipment from traveling through the Nez Perce-Clearwater National Forest.

The Lewiston Tribune reports Resources Conservation Company International says it could sustain $3.6 million in damages if it doesn't deliver the water evaporators on time to oil fields in Alberta, Canada.