# Relationship history for MSHA mine 1515217

Current hierarchy: **Kiser Jimmy → Kiser Brothers Coal Company Inc → #8**

- 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:** Kiser Jimmy → #8; 1974-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Comer Roger → #8; 1984-06-20 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Wilco Mining Company Inc → #8; 1985-05-01 to 1987-03-12; source msha-controller-operator-history
- **controller_controls_operator:** Comer Roger → Wilco Mining Company Inc; 1985-05-01 to 1987-03-12; source msha-controller-operator-history
- **controller_controls_mine:** Pruitt Lora J → #8; 1986-03-21 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Deel Fork Mining Corp → #8; 1987-03-13 to 1989-03-07; source msha-controller-operator-history
- **controller_controls_operator:** Pruitt Lora J → Deel Fork Mining Corp; 1987-03-13 to 1989-03-07; source msha-controller-operator-history
- **operator_operates_mine:** Hickory Hill Development Corp → #8; 1989-03-08 to 1992-09-27; source msha-controller-operator-history
- **controller_controls_mine:** Infinity Coal Corp → #8; 1989-03-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Infinity Coal Corp → Hickory Hill Development Corp; 1989-03-08 to 1992-09-27; source msha-controller-operator-history
- **operator_operates_mine:** Kiser Brothers Coal Company Inc → #8; 1992-09-28 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Kiser Jimmy → Kiser Brothers Coal Company Inc; 1992-09-28 to current/open; source msha-controller-operator-history