# Relationship history for MSHA mine 1701015

Current hierarchy: **Phillip P  Mattingly → Mattingly Products Co., Inc. → Portable Crusher**

- 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

- **controller_controls_mine:** Phillip P  Mattingly → Portable Crusher; 1995-06-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Mattingly Products Co., Inc. → Portable Crusher; 2018-10-11 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Phillip P  Mattingly → Mattingly Products Co., Inc.; 2018-10-11 to current/open; source msha-controller-operator-history