# Relationship history for MSHA mine 2700456

Current hierarchy: **Kimberly A  Chapman; Merlin J  Chapman → Advance Siteworks LLC → Advance Siteworks LLC**

- 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:** Advance Siteworks LLC → Advance Siteworks LLC; 2012-07-19 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Merlin J  Chapman et al → Advance Siteworks LLC; 2012-07-19 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Merlin J  Chapman et al → Advance Siteworks LLC; 2012-07-19 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Kimberly A  Chapman et al → Advance Siteworks LLC; 2012-07-19 to current/open; source msha-controller-operator-history