# Relationship history for MSHA mine 2700389

Current hierarchy: **Leo J  Manseau; Nathan G  Russell → Ledgebound Mobile Crushing LLC → LBMC 1**

- 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:** Develco of Stratham Inc/Ledgebound Mobile Crushing → LBMC 1; 2004-05-06 to 2005-10-14; source msha-controller-operator-history
- **controller_controls_mine:** Leo J  Manseau → LBMC 1; 2004-05-06 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Leo J  Manseau → Develco of Stratham Inc/Ledgebound Mobile Crushing; 2004-05-06 to 2005-10-14; source msha-controller-operator-history
- **operator_operates_mine:** Ledgebound Mobile Crushing LLC → LBMC 1; 2005-10-15 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Leo J  Manseau et al → LBMC 1; 2005-10-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Leo J  Manseau et al → Ledgebound Mobile Crushing LLC; 2005-10-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Nathan G  Russell et al → Ledgebound Mobile Crushing LLC; 2005-10-15 to current/open; source msha-controller-operator-history