# Relationship history for MSHA mine 3605619

Current hierarchy: **Miller Mike → M & S Coal Company → Buck Mountain Slope**

- 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:** B & P Coal Company → Buck Mountain Slope; 1975-01-01 to 1975-06-02; source msha-controller-operator-history
- **controller_controls_mine:** B & P Coal Company → Buck Mountain Slope; 1975-01-01 to 1975-06-02; source msha-controller-operator-history
- **controller_controls_operator:** B & P Coal Company → B & P Coal Company; 1975-01-01 to 1975-06-02; source msha-controller-operator-history
- **operator_operates_mine:** S & S Coal Company → Buck Mountain Slope; 1975-06-03 to 1979-09-24; source msha-controller-operator-history
- **controller_controls_mine:** Showers William & George Schaeffer → Buck Mountain Slope; 1975-06-03 to 1979-09-24; source msha-controller-operator-history
- **controller_controls_operator:** Showers William & George Schaeffer → S & S Coal Company; 1975-06-03 to 1979-09-24; source msha-controller-operator-history
- **operator_operates_mine:** S & S Coal Company → Buck Mountain Slope; 1979-09-25 to 1981-04-08; source msha-controller-operator-history
- **controller_controls_mine:** Gregory S  Showers et al → Buck Mountain Slope; 1979-09-25 to 1981-04-08; source msha-controller-operator-history
- **controller_controls_operator:** Gregory S  Showers et al → S & S Coal Company; 1979-09-25 to 1981-04-08; source msha-controller-operator-history
- **operator_operates_mine:** S & S Anthracite Inc → Buck Mountain Slope; 1981-04-09 to 1990-02-22; source msha-controller-operator-history
- **controller_controls_mine:** Showers Gregory S → Buck Mountain Slope; 1981-04-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Showers Gregory S → S & S Anthracite Inc; 1981-04-09 to 1990-02-22; source msha-controller-operator-history
- **operator_operates_mine:** M & S Coal Company → Buck Mountain Slope; 1990-02-23 to 1996-03-13; source msha-controller-operator-history
- **controller_controls_mine:** Miller Mike → Buck Mountain Slope; 1990-02-23 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Miller Mike → M & S Coal Company; 1990-02-23 to 1996-03-13; source msha-controller-operator-history
- **operator_operates_mine:** M & M Coal Company → Buck Mountain Slope; 1996-03-14 to 1996-05-06; source msha-controller-operator-history
- **controller_controls_mine:** Larry  Madenford et al → Buck Mountain Slope; 1996-03-14 to 1996-05-06; source msha-controller-operator-history
- **controller_controls_operator:** Larry  Madenford et al → M & M Coal Company; 1996-03-14 to 1996-05-06; source msha-controller-operator-history
- **operator_operates_mine:** M & S Coal Company → Buck Mountain Slope; 1996-05-07 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Miller Mike → M & S Coal Company; 1996-05-07 to current/open; source msha-controller-operator-history