# Relationship history for MSHA mine 4604639

Current hierarchy: **Hardesty John R Jr-Larry A Myers → Mohigan Mining Company Inc → Flaggy Meadow 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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** South Union Coal Company Inc → Flaggy Meadow Mine; 1975-01-02 to 1982-03-15; source msha-controller-operator-history
- **controller_controls_mine:** Jamison David → Flaggy Meadow Mine; 1975-01-02 to 1982-03-15; source msha-controller-operator-history
- **controller_controls_operator:** Jamison David → South Union Coal Company Inc; 1975-01-02 to 1982-03-15; source msha-controller-operator-history
- **operator_operates_mine:** Mohigan Mining Company Inc → Flaggy Meadow Mine; 1982-03-16 to 1986-02-28; source msha-controller-operator-history
- **controller_controls_mine:** Hardesty John R Jr & John P Boyle → Flaggy Meadow Mine; 1982-03-16 to 1986-02-28; source msha-controller-operator-history
- **controller_controls_operator:** Hardesty John R Jr & John P Boyle → Mohigan Mining Company Inc; 1982-03-16 to 1986-02-28; source msha-controller-operator-history
- **operator_operates_mine:** Mohigan Mining Company Inc → Flaggy Meadow Mine; 1986-03-01 to 1989-03-30; source msha-controller-operator-history
- **controller_controls_mine:** Hardesty John R Jr-Larry A Myers Et Al → Flaggy Meadow Mine; 1986-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Hardesty John R Jr-Larry A Myers Et Al → Mohigan Mining Company Inc; 1986-03-01 to 1989-03-30; source msha-controller-operator-history
- **operator_operates_mine:** National Development Inc → Flaggy Meadow Mine; 1989-03-31 to 1990-06-11; source msha-controller-operator-history
- **controller_controls_mine:** Petitte Michelle & Laura → Flaggy Meadow Mine; 1989-03-31 to 1990-06-11; source msha-controller-operator-history
- **controller_controls_operator:** Petitte Michelle & Laura → National Development Inc; 1989-03-31 to 1990-06-11; source msha-controller-operator-history
- **operator_operates_mine:** Mohigan Mining Company Inc → Flaggy Meadow Mine; 1990-06-12 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Hardesty John R Jr-Larry A Myers Et Al → Mohigan Mining Company Inc; 1990-06-12 to current/open; source msha-controller-operator-history