DILLON-SILVER BOW POOL

August 17, 2009
1820.70-10

Mr. Richard M. Draskovich
General Chairman, UTU
Dear Sir:

This concerns our recent discussion regarding operations of the RT 30 Dillon to Silver Bow pool.

As we discussed, trip rate data for this pool indicates that during the test period (1/1/2004 - 12/31/2004), this pool operated between 130 miles to 170 miles; thus indicating the RT 30 pool operated round trip from Dillon south to Barretts on occasion, or south to Barretts preceding and/or following a round trip from Dillon to Silver Bow. Consequently, this would indicate that the trip rate for the RT30 pool includes operations south to Barretts with no additional pay or penalty, if called upon to do so.

If this accurately reflects our understanding in this matter, please sign in the space provided below and return one (1) signed copy of this letter to me for my files.

Yours truly,
/s/ D K Peitzmeier, Director Labor Relations

AGREED:
/s/ R. M. Draskovich, General Chairman, UTU