# Relationship history for MSHA mine 4602227

Current hierarchy: **Stephen  Moscicki → Blue Bear Mining Inc. → Blue Bear Mine #1**

- 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:** Hawley Coal Mining Corp → Blue Bear Mine #1; 1950-01-01 to 1974-10-31; source msha-controller-operator-history
- **controller_controls_mine:** Belco Petroleum Corp → Blue Bear Mine #1; 1950-01-01 to 1974-10-31; source msha-controller-operator-history
- **controller_controls_operator:** Belco Petroleum Corp → Hawley Coal Mining Corp; 1950-01-01 to 1974-10-31; source msha-controller-operator-history
- **operator_operates_mine:** Hawley Coal Mining Corp → Blue Bear Mine #1; 1974-11-01 to 1985-07-14; source msha-controller-operator-history
- **controller_controls_mine:** Hawley Charbon → Blue Bear Mine #1; 1974-11-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Hawley Charbon → Hawley Coal Mining Corp; 1974-11-01 to 1985-07-14; source msha-controller-operator-history
- **operator_operates_mine:** Alpine Development Company → Blue Bear Mine #1; 1985-07-15 to 1996-03-31; source msha-controller-operator-history
- **controller_controls_mine:** Massey Energy Company → Blue Bear Mine #1; 1985-07-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Massey Energy Company → Alpine Development Company; 1985-07-15 to 1996-03-31; source msha-controller-operator-history
- **operator_operates_mine:** Alpine Development Company → Blue Bear Mine #1; 1996-04-01 to 2022-01-02; source msha-controller-operator-history
- **controller_controls_mine:** American Metals & Coal International Inc → Blue Bear Mine #1; 1996-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** American Metals & Coal International Inc → Alpine Development Company; 1996-04-01 to 2022-01-02; source msha-controller-operator-history
- **operator_operates_mine:** Timber Resources LLC → Blue Bear Mine #1; 2022-01-03 to 2023-06-25; source msha-controller-operator-history
- **controller_controls_mine:** Landover Energy LLC et al → Blue Bear Mine #1; 2022-01-03 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Landover Energy LLC et al → Timber Resources LLC; 2022-01-03 to 2023-06-25; source msha-controller-operator-history
- **controller_controls_operator:** AEM Holdings LLC et al → Timber Resources LLC; 2022-01-03 to 2023-06-25; source msha-controller-operator-history
- **controller_controls_operator:** DM Holdings LLC et al → Timber Resources LLC; 2022-01-03 to 2023-06-25; source msha-controller-operator-history
- **operator_operates_mine:** Blue Bear Mining Inc. → Blue Bear Mine #1; 2023-06-26 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Stephen  Moscicki → Blue Bear Mine #1; 2023-06-26 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Stephen  Moscicki → Blue Bear Mining Inc.; 2023-06-26 to current/open; source msha-controller-operator-history