# Relationship history for MSHA mine 2700399

Current hierarchy: **Leo J  Manseau; Nathan G  Russell → Ledge Bound Mobile Crushing LLC → LBMC -2**

- 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

- **controller_controls_mine:** Leo J  Manseau → LBMC -2; 2004-05-06 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Ledge Bound Mobile Crushing-Div/Develco Inc → LBMC -2; 2005-03-29 to 2005-10-14; source msha-controller-operator-history
- **controller_controls_operator:** Leo J  Manseau → Ledge Bound Mobile Crushing-Div/Develco Inc; 2005-03-29 to 2005-10-14; source msha-controller-operator-history
- **operator_operates_mine:** Ledge Bound Mobile Crushing LLC → LBMC -2; 2005-10-15 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Nathan G  Russell et al → LBMC -2; 2005-10-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Nathan G  Russell et al → Ledge Bound Mobile Crushing LLC; 2005-10-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Leo J  Manseau et al → Ledge Bound Mobile Crushing LLC; 2005-10-15 to current/open; source msha-controller-operator-history