# Relationship history for MSHA mine 3102079

Current hierarchy: **Nasco Llc → Nasco-North American Stone Corp Llc → ROWAN PINK**

- 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:** K R Miller Inc → ROWAN PINK; 1991-10-01 to 1998-01-14; source msha-controller-operator-history
- **controller_controls_mine:** Kenneth R  Miller → ROWAN PINK; 1991-10-01 to 1998-01-14; source msha-controller-operator-history
- **controller_controls_operator:** Kenneth R  Miller → K R Miller Inc; 1991-10-01 to 1998-01-14; source msha-controller-operator-history
- **operator_operates_mine:** Nasco-North American Stone Corp Llc → ROWAN PINK; 1998-01-15 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Nasco Llc → ROWAN PINK; 1998-01-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Nasco Llc → Nasco-North American Stone Corp Llc; 1998-01-15 to current/open; source msha-controller-operator-history