# Relationship history for MSHA mine 0600725

Current hierarchy: **Samuel F Cocopard; Laura L Matesky → Copar Operations of Tolland LLC → Copar Operations of Tolland**

- 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:** Burgundy Hills Quarry LLC → Copar Operations of Tolland; 2005-06-23 to 2021-06-16; source msha-controller-operator-history
- **controller_controls_mine:** David J  White  et al → Copar Operations of Tolland; 2005-06-23 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** David J  White  et al → Burgundy Hills Quarry LLC; 2005-06-23 to 2021-06-16; source msha-controller-operator-history
- **controller_controls_operator:** Gary  Marineau  et al → Burgundy Hills Quarry LLC; 2005-06-23 to 2021-06-16; source msha-controller-operator-history
- **operator_operates_mine:** Copar Operations of Tolland LLC → Copar Operations of Tolland; 2021-06-17 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Samuel F Cocopard et al → Copar Operations of Tolland; 2021-06-17 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Samuel F Cocopard et al → Copar Operations of Tolland LLC; 2021-06-17 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Laura L Matesky et al → Copar Operations of Tolland LLC; 2021-06-17 to current/open; source msha-controller-operator-history