# Relationship history for MSHA mine 1510818

Current hierarchy: **James A  Dean → Ibold Inc → #2**

- 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:** Sam Bass Coal Company Inc → #2; 1977-10-01 to 1980-09-01; source msha-controller-operator-history
- **controller_controls_mine:** Guy N S Iii → #2; 1977-10-01 to 1984-10-16; source msha-controller-operator-history
- **controller_controls_operator:** Guy N S Iii → Sam Bass Coal Company Inc; 1977-10-01 to 1980-09-01; source msha-controller-operator-history
- **controller_controls_mine:** Prudential Group Inc → #2; 1979-07-12 to 1980-12-31; source msha-controller-operator-history
- **operator_operates_mine:** Ewing Mining Corp → #2; 1980-09-02 to 1980-12-31; source msha-controller-operator-history
- **controller_controls_operator:** Prudential Group Inc → Ewing Mining Corp; 1980-09-02 to 1980-12-31; source msha-controller-operator-history
- **operator_operates_mine:** Ewing Mining Corp → #2; 1981-01-01 to 1985-08-04; source msha-controller-operator-history
- **controller_controls_mine:** Tennessee Partners Ltd → #2; 1981-01-01 to 1985-08-04; source msha-controller-operator-history
- **controller_controls_operator:** Tennessee Partners Ltd → Ewing Mining Corp; 1981-01-01 to 1985-08-04; source msha-controller-operator-history
- **operator_operates_mine:** Limousine Coal Inc → #2; 1985-08-05 to 1989-06-05; source msha-controller-operator-history
- **controller_controls_mine:** James A  Dean et al → #2; 1985-08-05 to 1996-07-11; source msha-controller-operator-history
- **controller_controls_operator:** James A  Dean et al → Limousine Coal Inc; 1985-08-05 to 1989-06-05; source msha-controller-operator-history
- **controller_controls_mine:** Chaney John → #2; 1989-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Jacks Creek Coal Corp → #2; 1989-06-06 to 1990-08-28; source msha-controller-operator-history
- **controller_controls_operator:** Chaney John → Jacks Creek Coal Corp; 1989-06-06 to 1990-08-28; source msha-controller-operator-history
- **controller_controls_mine:** Fritz Jerry → #2; 1990-02-26 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Leigh Energy Inc → #2; 1990-08-29 to 1991-06-04; source msha-controller-operator-history
- **controller_controls_operator:** Fritz Jerry → Leigh Energy Inc; 1990-08-29 to 1991-06-04; source msha-controller-operator-history
- **operator_operates_mine:** Ibold Inc → #2; 1991-06-05 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** James A  Dean et al → #2; 1991-06-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** James A  Dean et al → Ibold Inc; 1991-06-05 to current/open; source msha-controller-operator-history