# Relationship history for MSHA mine 1401683

Current hierarchy: **Jay  Sporer; Troy  Sporer → Sporer Land Development Inc → Rhea 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:** Sporer Land Development Inc → Rhea Pit; 2008-03-04 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Jay  Sporer et al → Rhea Pit; 2008-03-04 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jay  Sporer et al → Sporer Land Development Inc; 2008-03-04 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Troy  Sporer et al → Sporer Land Development Inc; 2008-03-04 to current/open; source msha-controller-operator-history