# Relationship history for MSHA mine 4609139

Current hierarchy: **Jack L  Williams → A & E Const Inc → 5 Block Surface Mine No 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

- **operator_operates_mine:** A & E Const Inc → 5 Block Surface Mine No 1; 2005-11-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Jack L  Williams → 5 Block Surface Mine No 1; 2005-11-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jack L  Williams → A & E Const Inc; 2005-11-01 to current/open; source msha-controller-operator-history