# Relationship history for MSHA mine 4607460

Current hierarchy: **Kenneth L  Farley → Big Branch Resources Inc → Mine No 1**

- 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:** Carl  Kirk et al → Mine No 1; 1987-09-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Amie Coal Company Inc → Mine No 1; 1988-02-01 to 1988-11-30; source msha-controller-operator-history
- **controller_controls_operator:** Carl  Kirk et al → Amie Coal Company Inc; 1988-02-01 to 1988-11-30; source msha-controller-operator-history
- **operator_operates_mine:** Hollow Mining Company Inc → Mine No 1; 1988-12-01 to 1991-10-03; source msha-controller-operator-history
- **controller_controls_mine:** Eddie  Hurley → Mine No 1; 1988-12-01 to 1991-10-03; source msha-controller-operator-history
- **controller_controls_operator:** Eddie  Hurley → Hollow Mining Company Inc; 1988-12-01 to 1991-10-03; source msha-controller-operator-history
- **operator_operates_mine:** Big Branch Resources Inc → Mine No 1; 1991-10-04 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Kenneth L  Farley et al → Mine No 1; 1991-10-04 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Kenneth L  Farley et al → Big Branch Resources Inc; 1991-10-04 to current/open; source msha-controller-operator-history