BILLINGS — The Environmental Protection Agency said Thursday it will collect indoor air samples from homes downstream

AP Photo/Jim Urquhart

Cleanup workers use oil

absorbent materials along side the Yellowstone River in Laurel,

Wednesday. An Exxon Mobil pipeline near Laurel ruptured and spilled an

estimated 1,000 barrels of crude into the Yellowstone.

of a Yellowstone River oil spill after residents raised concerns about health risks from the tens of thousands of gallons of crude that poured into the watercourse.

About 150 people showed up at an EPA meeting Wednesday night with que...