# Relationship history for MSHA mine 4201524

Current hierarchy: **Ron A  Pene → Pene Mining → Caboose 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:** Johnson Mining Company → Caboose Mine; 1978-03-09 to 1979-08-24; source msha-controller-operator-history
- **controller_controls_mine:** Johnson John M → Caboose Mine; 1978-03-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Johnson John M → Johnson Mining Company; 1978-03-09 to 1979-08-24; source msha-controller-operator-history
- **operator_operates_mine:** Pene Mining → Caboose Mine; 1979-08-25 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Ron A  Pene → Caboose Mine; 1979-08-25 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ron A  Pene → Pene Mining; 1979-08-25 to current/open; source msha-controller-operator-history