Umm, SR has on occasion opened TTB off Locke as well and once in Aurora. Doesn't happen often due to how early they try to open, but they almost always make an attempt if temps allow.
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Yup - Worked there for 20+ years, so I can remember TTB on Right Stuff, and early season attempts on both Obsession and Northern Lights...
Good ole days, before ASC when LBO was puttin in Lifts and opening up new terrain almost every year