SOUTH DAKOTA ONE-CALL NOTIFICATION CENTER 811 or 1-800-781-7474 CALL - BEFORE - YOU - DIG NORTH DAKOTA ONE-CALL NOTIFICATION CENTER 1-800-795-0555 CALL - BEFORE - YOU - DIG Before you dig - please contact the One-Call Notifica- tion Center for the state you are working in. By using One-Call you can find out if there are any under- ground facilities of any type within the area where you will be digging. West River Cooperative Telephone Co. P. O. Box 39 Bison, South Dakota 57620 JANUARY 2018 WEST RIVER COOPERATIVE TELEPHONE CO. BISON, SOUTH DAKOTA 067063 BISON OFC_OBC 2018_Layout 1 11/30/17 10:46 AM Page 1