Oct 5 (Reuters) - Teck Resources Ltd TECKb.TO
* Teck receives regulatory approval for share buy-back program
* Teck Resources - Teck may purchase up to 20 million class B shares during period starting October 10, 2017 and ending October 9, 2018
* Teck Resources Ltd - TSX has accepted Teck's notice of intention to make a normal course issuer bid to purchase its class B subordinate voting shares