# Relationship history for MSHA mine 3503396

Current hierarchy: **J Randall  Fenimore → Fenimore Aggregate Inc → FENIMORE AGGREGATE INC**

- 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:** Fenimore Aggregate Inc → FENIMORE AGGREGATE INC; 1993-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** J Randall  Fenimore → FENIMORE AGGREGATE INC; 1993-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** J Randall  Fenimore → Fenimore Aggregate Inc; 1993-07-01 to current/open; source msha-controller-operator-history