# Relationship history for MSHA mine 1601548

Current hierarchy: **Lyman L  Fleniken Jr → Fleniken Sand & Gravel, Inc. → Plant 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: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **controller_controls_mine:** Lyman L  Fleniken Jr → Plant 1; 1985-10-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Fleniken Sand & Gravel, Inc. → Plant 1; 2015-03-12 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Lyman L  Fleniken Jr → Fleniken Sand & Gravel, Inc.; 2015-03-12 to current/open; source msha-controller-operator-history