# Relationship history for MSHA mine 5002053

Current hierarchy: **David  Kjorsvik; Steve  Payne → Sealand Mining → Sealand**

- 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:** Sealand Mining → Sealand; 2017-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Steve  Payne et al → Sealand; 2017-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Steve  Payne et al → Sealand Mining; 2017-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** David  Kjorsvik et al → Sealand Mining; 2017-03-01 to current/open; source msha-controller-operator-history