# Relationship history for MSHA mine 1700735

Current hierarchy: **Michael E  Witham → MICHAEL E. WITHAM → WITHAM 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:** MICHAEL E. WITHAM → WITHAM PIT; 2002-08-15 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Michael E  Witham → WITHAM PIT; 2002-08-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Michael E  Witham → MICHAEL E. WITHAM; 2002-08-15 to current/open; source msha-controller-operator-history