# Relationship history for MSHA mine 0103069

Current hierarchy: **Wes  Calvert → M. E. Group, Inc. → Blaylock 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:** Marshco Inc → Blaylock Mine; 1996-03-01 to 1998-05-28; source msha-controller-operator-history
- **controller_controls_mine:** Bostick Marshall → Blaylock Mine; 1996-03-01 to 2002-02-25; source msha-controller-operator-history
- **controller_controls_operator:** Bostick Marshall → Marshco Inc; 1996-03-01 to 1998-05-28; source msha-controller-operator-history
- **controller_controls_mine:** John C  Fay Jr → Blaylock Mine; 1996-11-18 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Highland Mining Company Inc → Blaylock Mine; 1998-05-29 to 1999-06-24; source msha-controller-operator-history
- **controller_controls_operator:** John C  Fay Jr → Highland Mining Company Inc; 1998-05-29 to 1999-06-24; source msha-controller-operator-history
- **operator_operates_mine:** Marshco Incorporated → Blaylock Mine; 1999-06-25 to 2004-07-01; source msha-controller-operator-history
- **controller_controls_operator:** Bostick Marshall → Marshco Incorporated; 1999-06-25 to 2002-02-25; source msha-controller-operator-history
- **controller_controls_mine:** Martha  Mullins → Blaylock Mine; 2002-02-26 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Martha  Mullins → Marshco Inc; 2002-02-26 to 1998-05-28; source msha-controller-operator-history
- **controller_controls_operator:** Martha  Mullins → Marshco Incorporated; 2002-02-26 to 2004-07-01; source msha-controller-operator-history
- **operator_operates_mine:** M. E. Group, Inc. → Blaylock Mine; 2004-07-02 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Paul M  Whatley → Blaylock Mine; 2004-07-02 to 2008-03-24; source msha-controller-operator-history
- **controller_controls_operator:** Paul M  Whatley → M. E. Group, Inc.; 2004-07-02 to 2008-03-24; source msha-controller-operator-history
- **controller_controls_mine:** Rodney  Mays → Blaylock Mine; 2008-03-25 to 2009-05-06; source msha-controller-operator-history
- **controller_controls_operator:** Rodney  Mays → M. E. Group, Inc.; 2008-03-25 to 2009-05-06; source msha-controller-operator-history
- **controller_controls_mine:** Wes  Calvert → Blaylock Mine; 2009-05-07 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Wes  Calvert → M. E. Group, Inc.; 2009-05-07 to current/open; source msha-controller-operator-history