# Relationship history for MSHA mine 1202485

Current hierarchy: **The Heritage Group → Heritage Aggregates, LLC → Deer Creek Crushed Stone**

- 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

- **controller_controls_mine:** The Heritage Group → Deer Creek Crushed Stone; 1989-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Dana  Boyd et al → Deer Creek Crushed Stone; 2014-07-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** NALC, LLC → Deer Creek Crushed Stone; 2017-09-15 to 2019-05-31; source msha-controller-operator-history
- **controller_controls_operator:** Dana  Boyd et al → NALC, LLC; 2017-09-15 to 2019-05-31; source msha-controller-operator-history
- **controller_controls_operator:** Greg  Gould et al → NALC, LLC; 2017-09-15 to 2019-05-31; source msha-controller-operator-history
- **operator_operates_mine:** Heritage Aggregates, LLC → Deer Creek Crushed Stone; 2019-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** The Heritage Group → Heritage Aggregates, LLC; 2019-06-01 to current/open; source msha-controller-operator-history