# Relationship history for MSHA mine 0100787

Current hierarchy: **NOVADX  Ventures Corporation → MCoal Corporation → Rosa 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

- **operator_operates_mine:** Calvert & Marsh Coal Company Inc → Rosa Mine; 1950-01-01 to 1983-12-20; source msha-controller-operator-history
- **controller_controls_mine:** Calvert John D → Rosa Mine; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Calvert John D → Calvert & Marsh Coal Company Inc; 1950-01-01 to 1983-12-20; source msha-controller-operator-history
- **controller_controls_mine:** Reid Dolores → Rosa Mine; 1982-02-01 to 2002-09-30; source msha-controller-operator-history
- **controller_controls_mine:** Simmons George M → Rosa Mine; 1983-06-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Berry Mountain Mining Company Inc → Rosa Mine; 1983-12-21 to 1986-08-19; source msha-controller-operator-history
- **controller_controls_operator:** Simmons George M → Berry Mountain Mining Company Inc; 1983-12-21 to 1986-08-19; source msha-controller-operator-history
- **operator_operates_mine:** New Acton Coal Mining Company Inc → Rosa Mine; 1986-08-20 to 1987-08-11; source msha-controller-operator-history
- **controller_controls_operator:** Reid Dolores → New Acton Coal Mining Company Inc; 1986-08-20 to 1987-08-11; source msha-controller-operator-history
- **operator_operates_mine:** Soniclean Coal Of Alabama Inc → Rosa Mine; 1987-08-12 to 2009-09-29; source msha-controller-operator-history
- **controller_controls_mine:** Stewart James W → Rosa Mine; 1987-08-12 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Stewart James W → Soniclean Coal Of Alabama Inc; 1987-08-12 to 2009-09-29; source msha-controller-operator-history
- **controller_controls_mine:** Robert J  Reed Sr → Rosa Mine; 2002-10-01 to 2012-08-31; source msha-controller-operator-history
- **controller_controls_operator:** Robert J  Reed Sr → New Acton Coal Mining Company Inc; 2002-10-01 to 1987-08-11; source msha-controller-operator-history
- **operator_operates_mine:** MCoal Corporation → Rosa Mine; 2009-09-30 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** NOVADX  Ventures Corporation → Rosa Mine; 2009-09-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** NOVADX  Ventures Corporation → MCoal Corporation; 2009-09-30 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** TRU Energy Services LLC → Rosa Mine; 2012-09-01 to 2012-10-29; source msha-controller-operator-history
- **controller_controls_operator:** TRU Energy Services LLC → New Acton Coal Mining Company Inc; 2012-09-01 to 1987-08-11; source msha-controller-operator-history
- **controller_controls_mine:** NACCO Industries Inc → Rosa Mine; 2012-10-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** NACCO Industries Inc → New Acton Coal Mining Company Inc; 2012-10-30 to 1987-08-11; source msha-controller-operator-history