Editing Yan Lift (section)

===Keystone, Colorado, accident (1985)===
Potential problems with Yan lifts began to surface as early as December 14, 1985, when the upper bullwheel on the Teller lift at [[Keystone Resort|Keystone Ski Resort]] in Colorado disconnected from the main gearbox shaft. The lift was unique in its design as there was no support underneath the bullwheel. Lift Engineering had explained when the lift first opened the year before that a support beam underneath was not necessary. They claimed the pressure of the system along with the welds would keep the bullwheel in place.<ref>{{Cite web |last=Johnson |first=Brad |title=Over 30 years ago, Keystone lift accident left 2 dead, 49 injured (Summit Daily archive) |url=https://www.summitdaily.com/news/keystone-lift-accident-was-25-years-ago-this-week/ |access-date=February 27, 2022 |website=www.summitdaily.com |date=December 20, 2016 |language=en-US}}</ref> Faulty welding would be blamed for the accident.<ref name='wsj-1997-01-16'>{{cite news | title= Faulty Weld Is Blamed For Ski Lift Accident | date=December 18, 1985 | url =https://query.nytimes.com/gst/fullpage.html?res=9E00E7DB153BF93BA25751C1A963948260 | work =[[The New York Times]] | access-date = February 29, 2008 }}</ref> Two people were killed and 47 injured.<ref>{{cite news | first= Brad | last= Johnson| title= Keystone lift accident was 25 years ago this week | date=December 14, 2010 | url =http://www.summitdaily.com/article/20101215/NEWS/101219899 | work =[[Summit Daily]] | access-date = March 22, 2015}}</ref>  The Teller lift, and its twin lift, Santiago, were two triple chairlifts constructed in 1984 as part of Keystone's North Peak expansion. Teller was rebuilt by Yan and renamed the Ruby lift, free of charge. Santiago was replaced by a [[Doppelmayr (North America)|Doppelmayr]] high speed quad in 1998 and relocated to [[Big Sky, Montana]], while Ruby was replaced by a [[Poma]] high speed six pack in 2000.{{citation needed|date=June 2016}}

During the late 1980s, the [[Colorado Passenger Tramway Safety Board]] began to question the safety of Yan's lifts. They learned that Kunczynski, in his drive to build affordable ski lifts, regularly sent steel parts to be welded together in [[ski area]] parking lots.<ref name='wsj-1997-01-16'/> The Board alleged that Kunczynski's lifts were unsafe. The ski industry blasted the Board and continued to install Yan lifts.{{citation needed|date=June 2016}}