# Relationship history for MSHA mine 4602437

Current hierarchy: **Gene R Taylor → West Virginia Properties, Inc. → Caretta Impoundment/Refuse Areas**

- 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:** Olga Coal Company → Caretta Impoundment/Refuse Areas; 1950-01-01 to 1988-08-23; source msha-controller-operator-history
- **controller_controls_mine:** Olga Coal Company → Caretta Impoundment/Refuse Areas; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Olga Coal Company → Olga Coal Company; 1950-01-01 to 1988-08-23; source msha-controller-operator-history
- **controller_controls_mine:** Voest-Alpine International Corp → Caretta Impoundment/Refuse Areas; 1978-03-22 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Virginia Crews Coal Company → Caretta Impoundment/Refuse Areas; 1988-08-24 to 1990-08-05; source msha-controller-operator-history
- **controller_controls_operator:** Voest-Alpine International Corp → Virginia Crews Coal Company; 1988-08-24 to 1990-08-05; source msha-controller-operator-history
- **operator_operates_mine:** Olga Coal Company → Caretta Impoundment/Refuse Areas; 1990-08-06 to 1992-11-11; source msha-controller-operator-history
- **controller_controls_operator:** Olga Coal Company → Olga Coal Company; 1990-08-06 to 1992-11-11; source msha-controller-operator-history
- **operator_operates_mine:** West Virginia Properties Inc → Caretta Impoundment/Refuse Areas; 1992-11-12 to 2013-06-25; source msha-controller-operator-history
- **controller_controls_mine:** Gene R Taylor → Caretta Impoundment/Refuse Areas; 1992-11-12 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Gene R Taylor → West Virginia Properties Inc; 1992-11-12 to 2013-06-25; source msha-controller-operator-history
- **operator_operates_mine:** Caretta Minerals, LLC → Caretta Impoundment/Refuse Areas; 2013-06-26 to 2023-09-18; source msha-controller-operator-history
- **controller_controls_mine:** Sandeep  Agarwal → Caretta Impoundment/Refuse Areas; 2013-06-26 to 2017-09-18; source msha-controller-operator-history
- **controller_controls_operator:** Sandeep  Agarwal → Caretta Minerals, LLC; 2013-06-26 to 2017-09-18; source msha-controller-operator-history
- **controller_controls_mine:** JSW Steel Ltd → Caretta Impoundment/Refuse Areas; 2017-09-19 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** JSW Steel Ltd → Caretta Minerals, LLC; 2017-09-19 to 2023-09-18; source msha-controller-operator-history
- **operator_operates_mine:** West Virginia Properties, Inc. → Caretta Impoundment/Refuse Areas; 2023-09-19 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Gene R Taylor → West Virginia Properties, Inc.; 2023-09-19 to current/open; source msha-controller-operator-history