# Relationship history for MSHA mine 1700699

Current hierarchy: **Michael  Fowler; Timothy  Fowler → Frank O Fowler & Sons Inc → Cole Pit/Fowler 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:** Frank O Fowler & Sons Inc → Cole Pit/Fowler Pit; 2001-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Timothy  Fowler  et al → Cole Pit/Fowler Pit; 2001-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Timothy  Fowler  et al → Frank O Fowler & Sons Inc; 2001-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Michael  Fowler  et al → Frank O Fowler & Sons Inc; 2001-03-01 to current/open; source msha-controller-operator-history