# Relationship history for MSHA mine 3401230

Current hierarchy: **Nowata County-OK → Nowata County → NOWATA PITS DIST #1**

- 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:** Punneo Construction Company → NOWATA PITS DIST #1; 1979-10-01 to 2000-12-03; source msha-controller-operator-history
- **controller_controls_mine:** Punneo Construction Company → NOWATA PITS DIST #1; 1979-10-01 to 2000-12-03; source msha-controller-operator-history
- **controller_controls_operator:** Punneo Construction Company → Punneo Construction Company; 1979-10-01 to 2000-12-03; source msha-controller-operator-history
- **operator_operates_mine:** Nowata County → NOWATA PITS DIST #1; 2000-12-04 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Nowata County-OK → NOWATA PITS DIST #1; 2000-12-04 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Nowata County-OK → Nowata County; 2000-12-04 to current/open; source msha-controller-operator-history