# Relationship history for MSHA mine 0103389

Current hierarchy: **William Ridley  Elkins Jr → CLAS COAL COMPANY INC. → Carbon Hill 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:** William Ridley  Elkins Jr → Carbon Hill Mine; 1993-11-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Prospect Mining and Development Company, Inc. → Carbon Hill Mine; 2008-05-09 to 2016-12-18; source msha-controller-operator-history
- **controller_controls_mine:** Ronald S  Bryant et al → Carbon Hill Mine; 2008-05-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ronald S  Bryant et al → Prospect Mining and Development Company, Inc.; 2008-05-09 to 2016-12-18; source msha-controller-operator-history
- **operator_operates_mine:** Prospect Mining and Development Company,LLC → Carbon Hill Mine; 2016-12-19 to 2017-05-20; source msha-controller-operator-history
- **controller_controls_mine:** Sandton Credit Solutions Master Fund IV, LP → Carbon Hill Mine; 2016-12-19 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Sandton Credit Solutions Master Fund IV, LP → Prospect Mining and Development Company,LLC; 2016-12-19 to 2017-05-20; source msha-controller-operator-history
- **operator_operates_mine:** Z & J Operating, LLC → Carbon Hill Mine; 2017-05-21 to 2019-12-03; source msha-controller-operator-history
- **controller_controls_mine:** Jeffrey K Justus II → Carbon Hill Mine; 2017-05-21 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jeffrey K Justus II → Z & J Operating, LLC; 2017-05-21 to 2019-12-03; source msha-controller-operator-history
- **operator_operates_mine:** Prospect Mining & Development LLC → Carbon Hill Mine; 2019-12-04 to 2020-01-29; source msha-controller-operator-history
- **controller_controls_operator:** Sandton Credit Solutions Master Fund IV, LP → Prospect Mining & Development LLC; 2019-12-04 to 2020-01-29; source msha-controller-operator-history
- **operator_operates_mine:** CLAS COAL COMPANY INC. → Carbon Hill Mine; 2020-01-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** William Ridley  Elkins Jr → CLAS COAL COMPANY INC.; 2020-01-30 to current/open; source msha-controller-operator-history