# Relationship history for MSHA mine 3606651

Current hierarchy: **Mc Neish David → Mid-State Energy Corp → Mease/Pardee/Pinto Strip**

- 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:** Mid-State Energy Corp → Mease/Pardee/Pinto Strip; 1978-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Mc Neish David → Mease/Pardee/Pinto Strip; 1978-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Mc Neish David → Mid-State Energy Corp; 1978-03-01 to current/open; source msha-controller-operator-history