# Relationship history for MSHA mine 2700500

Current hierarchy: **Albert J Guay; Mary L Guay → Jericho Brook Commercial Development LLC → Jericho Brook**

- 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:** Jericho Brook Commercial Development LLC → Jericho Brook; 2016-10-06 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Mary L Guay et al → Jericho Brook; 2016-10-06 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Mary L Guay et al → Jericho Brook Commercial Development LLC; 2016-10-06 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Albert J Guay et al → Jericho Brook Commercial Development LLC; 2016-10-06 to current/open; source msha-controller-operator-history