# Relationship history for MSHA mine 2401835

Current hierarchy: **Don  Baide → Yogo Mining Company LLC → Vortex Mine**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **operator_operates_mine:** Vortex Mining → Vortex Mine; 1986-12-01 to 2002-05-06; source msha-controller-operator-history
- **controller_controls_mine:** Peter J  Ecker → Vortex Mine; 1986-12-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Peter J  Ecker → Vortex Mining; 1986-12-01 to 2002-05-06; source msha-controller-operator-history
- **operator_operates_mine:** Yogo Creek Mining LLC → Vortex Mine; 2002-05-07 to 2005-11-27; source msha-controller-operator-history
- **controller_controls_mine:** Calvin  Houser et al → Vortex Mine; 2002-05-07 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Calvin  Houser et al → Yogo Creek Mining LLC; 2002-05-07 to 2005-11-27; source msha-controller-operator-history
- **controller_controls_operator:** Ron  Guill et al → Yogo Creek Mining LLC; 2002-05-07 to 2005-11-27; source msha-controller-operator-history
- **operator_operates_mine:** Kim Lanny Perry → Vortex Mine; 2005-11-28 to 2010-03-29; source msha-controller-operator-history
- **controller_controls_mine:** Kim Lanny  Perry → Vortex Mine; 2005-11-28 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Kim Lanny  Perry → Kim Lanny Perry; 2005-11-28 to 2010-03-29; source msha-controller-operator-history
- **operator_operates_mine:** Blue Ice Sapphire Mining, Inc. → Vortex Mine; 2010-03-30 to 2017-10-23; source msha-controller-operator-history
- **controller_controls_mine:** Mike D Roberts → Vortex Mine; 2010-03-30 to 2012-04-08; source msha-controller-operator-history
- **controller_controls_operator:** Mike D Roberts → Blue Ice Sapphire Mining, Inc.; 2010-03-30 to 2012-04-08; source msha-controller-operator-history
- **controller_controls_mine:** Laurie L Roberts → Vortex Mine; 2012-04-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Laurie L Roberts → Blue Ice Sapphire Mining, Inc.; 2012-04-09 to 2017-10-23; source msha-controller-operator-history
- **operator_operates_mine:** Yogo Mining Company LLC → Vortex Mine; 2017-10-24 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Don  Baide → Vortex Mine; 2017-10-24 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Don  Baide → Yogo Mining Company LLC; 2017-10-24 to current/open; source msha-controller-operator-history