# Relationship history for MSHA mine 4406850

Current hierarchy: **Perry Allen  Whited → A & N Coal Company Inc → No 2**

- 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:** Perry Allen  Whited → No 2; 1994-11-04 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Gardner Inc → No 2; 1996-09-01 to 1997-08-27; source msha-controller-operator-history
- **controller_controls_mine:** Gardner Maynard L → No 2; 1996-09-01 to 1997-08-27; source msha-controller-operator-history
- **controller_controls_operator:** Gardner Maynard L → Gardner Inc; 1996-09-01 to 1997-08-27; source msha-controller-operator-history
- **operator_operates_mine:** A & N Coal Company Inc → No 2; 1997-08-28 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Perry Allen  Whited → A & N Coal Company Inc; 1997-08-28 to current/open; source msha-controller-operator-history