# Relationship history for MSHA mine 0600304

Current hierarchy: **Robert  Jacquier; James  Jacquier → LAURELBROOK NATURAL RESOURCES, LLC → EAST CANAAN PIT & MILL**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** O'Connor Brothers Incorporated → EAST CANAAN PIT & MILL; 1950-01-01 to 2012-12-27; source msha-controller-operator-history
- **controller_controls_mine:** Russell J  O'Connor et al → EAST CANAAN PIT & MILL; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Russell J  O'Connor et al → O'Connor Brothers Incorporated; 1950-01-01 to 2012-12-27; source msha-controller-operator-history
- **operator_operates_mine:** Laurelbrook Natural Resources, LLC → EAST CANAAN PIT & MILL; 2012-12-28 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** James  Jacquier et al → EAST CANAAN PIT & MILL; 2012-12-28 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** James  Jacquier et al → Laurelbrook Natural Resources, LLC; 2012-12-28 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Robert  Jacquier et al → Laurelbrook Natural Resources, LLC; 2012-12-28 to current/open; source msha-controller-operator-history