# Relationship history for MSHA mine 2700327

Current hierarchy: **Alfred E  Mitchell → A E Mitchell Corp → A. E. MITCHELL CORPORATION PIT**

- 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 Mitchell Corp → A. E. MITCHELL CORPORATION PIT; 1998-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Alfred E  Mitchell → A. E. MITCHELL CORPORATION PIT; 1998-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Alfred E  Mitchell → A E Mitchell Corp; 1998-05-01 to current/open; source msha-controller-operator-history