▁Mountain ▁type ▁steam ▁locomot ives ▁which ▁were ▁acquired ▁by ▁the ▁South ▁African ▁Rail ways ▁in ▁that ▁year . ▁ ▁Man ufact ur ers ▁Type ▁MP 1 ▁tend ers ▁were ▁built ▁between ▁ 1 9 1 2 ▁and ▁ 1 9 2 5 ▁by ▁Bald win ▁Lo comot ive ▁Works , ▁Bey er , ▁Pe ac ock ▁and ▁Company , ▁H ensch el ▁& ▁Son , ▁J . A . ▁Ma ff ei , ▁North ▁British ▁Lo comot ive ▁Company , ▁Robert ▁Steph enson ▁and ▁Company ▁and ▁V ul can ▁Found ry . ▁ ▁The ▁South ▁African ▁Rail ways ▁( S AR ) ▁placed ▁ 4 6 ▁Class ▁ 1 2 ▁Mountain ▁type ▁locomot ives ▁in ▁service ▁between ▁ 1 9 1 2 ▁and ▁ 1 9 2 1 . ▁The ▁locomot ive ▁and ▁tender ▁were ▁designed ▁by ▁D . A . ▁Hend rie , ▁who ▁had ▁been ▁appointed ▁as ▁the ▁first ▁Chief ▁Mechan ical ▁Engine er ▁of ▁the ▁S AR ▁upon ▁its ▁in ception ▁in ▁ 1 9 1 0 . ▁The ▁Class ▁ 1 2 ▁was ▁the ▁first ▁locomot ive ▁design ▁to ▁origin ate ▁from ▁the ▁newly ▁established ▁S AR ▁and ▁was ▁acquired ▁to ▁ha ul ▁coal ▁between ▁Germ ist on ▁and ▁Wit bank . ▁The ▁Type ▁MP 1 ▁first ▁entered ▁service ▁as ▁tend ers ▁to ▁these ▁locomot ives . ▁ ▁Character istics ▁The ▁Type ▁MP 1 ▁was ▁the ▁first ▁of ▁a ▁standard ▁tender ▁type ▁which , ▁by ▁fitting ▁an ▁engine ▁draw bar ▁to ▁suit ▁the ▁class ▁of ▁engine ▁to ▁which ▁it