# Relationship history for MSHA mine 2902011

Current hierarchy: **RPC & SAC Revocable Trust; TEMC VS Trust → Espanola Transit Mix Company → San Juan Pueblo 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

- **controller_controls_mine:** Richard P  Cook → San Juan Pueblo Mine; 1950-01-01 to 2017-10-31; source msha-controller-operator-history
- **operator_operates_mine:** San Juan Pueblo Sand & Gravel Enterprise → San Juan Pueblo Mine; 1985-12-01 to 1987-06-30; source msha-controller-operator-history
- **controller_controls_mine:** San Juan Pueblo Sand & Gravel Enterprise → San Juan Pueblo Mine; 1985-12-01 to 1987-06-30; source msha-controller-operator-history
- **controller_controls_operator:** San Juan Pueblo Sand & Gravel Enterprise → San Juan Pueblo Sand & Gravel Enterprise; 1985-12-01 to 1987-06-30; source msha-controller-operator-history
- **operator_operates_mine:** Espanola Transit Mix Company → San Juan Pueblo Mine; 1987-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Richard P  Cook → Espanola Transit Mix Company; 1987-07-01 to 2017-10-31; source msha-controller-operator-history
- **controller_controls_mine:** TEMC VS Trust et al → San Juan Pueblo Mine; 2017-11-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** TEMC VS Trust et al → Espanola Transit Mix Company; 2017-11-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** RPC & SAC Revocable Trust et al → Espanola Transit Mix Company; 2017-11-01 to current/open; source msha-controller-operator-history