# Relationship history for MSHA mine 3608984

Current hierarchy: **Ash B English; Tim N Morgan → Jurassic Energy Inc → Elk County 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:** Jurassic Energy Inc → Elk County Mine; 2001-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Ronald L  Butler Jr → Elk County Mine; 2001-05-01 to 2005-05-12; source msha-controller-operator-history
- **controller_controls_operator:** Ronald L  Butler Jr → Jurassic Energy Inc; 2001-05-01 to 2005-05-12; source msha-controller-operator-history
- **controller_controls_mine:** Ash B English et al → Elk County Mine; 2005-05-13 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ash B English et al → Jurassic Energy Inc; 2005-05-13 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Tim N Morgan et al → Jurassic Energy Inc; 2005-05-13 to current/open; source msha-controller-operator-history