# Relationship history for MSHA mine 4609040

Current hierarchy: **Timothy J  Gregory → Second Shift Mining, Inc. → Auger 4**

- 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

- **controller_controls_mine:** Robert  Williams et al → Auger 4; 1991-08-01 to 2010-07-25; source msha-controller-operator-history
- **operator_operates_mine:** Bundy Auger Mining Inc → Auger 4; 2004-05-04 to 2012-02-22; source msha-controller-operator-history
- **controller_controls_operator:** Robert  Williams et al → Bundy Auger Mining Inc; 2004-05-04 to 2010-07-25; source msha-controller-operator-history
- **controller_controls_operator:** David D  Bundy et al → Bundy Auger Mining Inc; 2004-05-04 to 2010-07-25; source msha-controller-operator-history
- **controller_controls_mine:** Perian  Salviola et al → Auger 4; 2010-07-26 to 2012-12-31; source msha-controller-operator-history
- **controller_controls_operator:** Perian  Salviola et al → Bundy Auger Mining Inc; 2010-07-26 to 2012-02-22; source msha-controller-operator-history
- **controller_controls_operator:** David D  Bundy et al → Bundy Auger Mining Inc; 2010-07-26 to 2012-02-22; source msha-controller-operator-history
- **controller_controls_mine:** John W  Preece → Auger 4; 2011-08-15 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** West Virginia Industrial Services, Inc. → Auger 4; 2012-02-23 to 2014-03-31; source msha-controller-operator-history
- **controller_controls_operator:** John W  Preece → West Virginia Industrial Services, Inc.; 2012-02-23 to 2014-03-31; source msha-controller-operator-history
- **controller_controls_mine:** OHA Investment Corporation et al → Auger 4; 2013-01-01 to 2016-06-27; source msha-controller-operator-history
- **controller_controls_operator:** OHA Investment Corporation et al → Bundy Auger Mining Inc; 2013-01-01 to 2012-02-22; source msha-controller-operator-history
- **controller_controls_operator:** David D  Bundy et al → Bundy Auger Mining Inc; 2013-01-01 to 2012-02-22; source msha-controller-operator-history
- **operator_operates_mine:** Second Shift Mining, Inc. → Auger 4; 2014-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Timothy J  Gregory → Auger 4; 2014-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Timothy J  Gregory → Second Shift Mining, Inc.; 2014-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** David D  Bundy → Auger 4; 2016-06-28 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** David D  Bundy → Bundy Auger Mining Inc; 2016-06-28 to 2012-02-22; source msha-controller-operator-history