Washington, D.C. - U.S. Senators Craig Thomas and Mike Enzi, both R-Wyo., said constituents should expect mail correspondence from their Washington, D.C. offices to be slow after being closed this week by the discovery of ricin.

The senators said mail delivery will resume in some form after a review of mail processing and security procedures are complete and implemented, but mail sent recently to the Senate may never be delivered.

"It might be slow-going for a while for correspondence, so for a more timely response we encourage people to either contact our state offices or use email or the fax," said the senators.

Thomas' Washington, D.C. office is scheduled to re-open Monday, Feb. 9 and mail delivery to his Dirksen office will be delayed indefinitely as the investigation continues. Until then constituents should contact the senator through his state offices at:

• Casper-100 E. B Street, Suite 2201, Casper, Wyoming 82601, 307-261-6413 main; 307-265-6706 fax

• Riverton-325 W. Main Street, Suite F, Riverton, Wyoming 82501

• Sheridan-2 N. Main Street, Suite 206, Sheridan, Wyoming 82801

• Cheyenne-2120 Federal Building, Suite 2013, Cheyenne, Wyoming 82001

• Rock Springs-2632 Foothill Blvd., Suite 101, Rock Springs, Wyoming 82901

Enzi's Washington, D.C. office re-opened Thursday. Enzi can be reached by fax at his Washington, D.C. office at 202.228.0359 or by e-mail through his web site (enzi.senate.gov).

Enzi can also be reached through his state offices at:

• Gillette - ph: 307-682-6268, fax: 307-682-6501, mailing address: 400 South Kendrick, Suite 303, Gillette, WY 82716

• Cheyenne - ph: 307-772-2477, fax: 307-772-2380, mailing address: 2120 Capitol Ave, Suite 2007, Cheyenne, WY 82001

• Casper - ph: 307-261-6572, fax: 307-261-6574, mailing address: 100 East B St., Federal Center, Suite 3201 Casper, WY 82601

• Cody - ph: 307-527-9444, fax: 307-527-9476, mailing address: 1285 Sheridan Ave., Cody, WY 82414

• Jackson - ph: 307-739-9507, fax: 307-739-9520, mailing address: P.O. Box 12470, Jackson, WY 83002

Senate office buildings were closed after ricin was sent to Majority Leader Bill Frist's, R-Tenn., office in the Dirksen Senate Office Building.