# Relationship history for MSHA mine 1517238

Current hierarchy: **Siegel John J Jr → Puma Energy Corp → Hoyt 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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** Puma Energy Corp → Hoyt Mine; 1992-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Siegel John J Jr → Hoyt Mine; 1992-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Siegel John J Jr → Puma Energy Corp; 1992-05-01 to current/open; source msha-controller-operator-history