# Relationship history for MSHA mine 3401206

Current hierarchy: **Frank W  Podpechan → Hickory Coal Corp → Rogers County 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

- **controller_controls_mine:** Petroleum Reserve Corp → Rogers County Mine; 1975-03-25 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Frank W  Podpechan → Rogers County Mine; 1977-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Hickory Coal Company → Rogers County Mine; 1979-06-01 to 1980-09-30; source msha-controller-operator-history
- **controller_controls_mine:** Claremont Corp → Rogers County Mine; 1979-06-01 to 1980-09-30; source msha-controller-operator-history
- **controller_controls_operator:** Claremont Corp → Hickory Coal Company; 1979-06-01 to 1980-09-30; source msha-controller-operator-history
- **operator_operates_mine:** Carbonex Coal Company → Rogers County Mine; 1980-10-01 to 1984-07-22; source msha-controller-operator-history
- **controller_controls_operator:** Petroleum Reserve Corp → Carbonex Coal Company; 1980-10-01 to 1984-07-22; source msha-controller-operator-history
- **operator_operates_mine:** Coal Corp Operating Co Of Amer-Carbonex Coal Div → Rogers County Mine; 1984-07-23 to 1985-04-21; source msha-controller-operator-history
- **controller_controls_mine:** Campbell Resources Inc → Rogers County Mine; 1984-07-23 to 1988-04-10; source msha-controller-operator-history
- **controller_controls_operator:** Campbell Resources Inc → Coal Corp Operating Co Of Amer-Carbonex Coal Div; 1984-07-23 to 1985-04-21; source msha-controller-operator-history
- **operator_operates_mine:** Hickory Coal Corp → Rogers County Mine; 1985-04-22 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Frank W  Podpechan → Hickory Coal Corp; 1985-04-22 to current/open; source msha-controller-operator-history