The Oyu Tolgoi mine (Mongolian: Оюу Толгой, also Oyuu Tolgoi, Turquoise Hill) is a combined open pit and underground mining project in Khanbogd sum within the south Gobi Desert, approximately 235 kilometres (146 mi) east of the Ömnögovi Province capital Dalanzadgad. The site was discovered in 2001 and is being developed as a joint venture between Ivanhoe Mines, Rio Tinto and the Government of Mongolia. The mine is under construction as of 2010 and scheduled to begin production in 2013.
Rugged Controls running line tensiometers (or cable line riders) are installed on the 4 main 48mm cables for the primary shaft elevator. The RLTs are rated for up to 88,000lbs of line tension.