# Relationship history for MSHA mine 0404615

Current hierarchy: **Joe  Edwards; Alfred  Gray → Big Pine Mining LLC → Taber 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:** Ancient Channel Mining Company → Taber Mine; 1982-11-01 to 2022-01-24; source msha-controller-operator-history
- **controller_controls_mine:** John C  Morton → Taber Mine; 1982-11-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** John C  Morton → Ancient Channel Mining Company; 1982-11-01 to 2022-01-24; source msha-controller-operator-history
- **operator_operates_mine:** Big Pine Mining LLC → Taber Mine; 2022-01-25 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Joe  Edwards et al → Taber Mine; 2022-01-25 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Joe  Edwards et al → Big Pine Mining LLC; 2022-01-25 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Alfred  Gray et al → Big Pine Mining LLC; 2022-01-25 to current/open; source msha-controller-operator-history