# Relationship history for MSHA mine 1401482

Current hierarchy: **Alan R.  Harshbarger; Janell LB  Harshbarger → Bayer Stone, Inc. → BAYER 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

- **controller_controls_mine:** Janell LB  Harshbarger et al → BAYER 1; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Bayer Stone, Inc. → BAYER 1; 1985-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Janell LB  Harshbarger et al → Bayer Stone, Inc.; 1985-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Alan R.  Harshbarger et al → Bayer Stone, Inc.; 1985-07-01 to current/open; source msha-controller-operator-history