# Relationship history for MSHA mine 4104894

Current hierarchy: **Rachel  Schuler → Heartland Quarries, LLC → Heartland Aggregates Granite Shoals Pit**

- 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:** CHAD Materials, LLC → Heartland Aggregates Granite Shoals Pit; 2011-07-20 to 2019-03-31; source msha-controller-operator-history
- **controller_controls_mine:** CPEK LLC et al → Heartland Aggregates Granite Shoals Pit; 2011-07-20 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** CPEK LLC et al → CHAD Materials, LLC; 2011-07-20 to 2019-03-31; source msha-controller-operator-history
- **controller_controls_mine:** John W  Schuler → Heartland Aggregates Granite Shoals Pit; 2014-06-11 to 2024-04-23; source msha-controller-operator-history
- **operator_operates_mine:** Granite Trucking, Inc. → Heartland Aggregates Granite Shoals Pit; 2019-04-01 to 2020-03-05; source msha-controller-operator-history
- **controller_controls_mine:** Daniel David  Champeau Jr et al → Heartland Aggregates Granite Shoals Pit; 2019-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Daniel David  Champeau Jr et al → Granite Trucking, Inc.; 2019-04-01 to 2020-03-05; source msha-controller-operator-history
- **controller_controls_operator:** Kelly Dawn  Champeau et al → Granite Trucking, Inc.; 2019-04-01 to 2020-03-05; source msha-controller-operator-history
- **operator_operates_mine:** Trinity Mining Co. → Heartland Aggregates Granite Shoals Pit; 2020-03-06 to 2021-04-29; source msha-controller-operator-history
- **controller_controls_mine:** Envirostate, LLC et al → Heartland Aggregates Granite Shoals Pit; 2020-03-06 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Envirostate, LLC et al → Trinity Mining Co.; 2020-03-06 to 2021-04-29; source msha-controller-operator-history
- **controller_controls_operator:** Demetrius  Early et al → Trinity Mining Co.; 2020-03-06 to 2021-04-29; source msha-controller-operator-history
- **operator_operates_mine:** Heartland Quarries, LLC → Heartland Aggregates Granite Shoals Pit; 2021-04-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** John W  Schuler → Heartland Quarries, LLC; 2021-04-30 to 2024-04-23; source msha-controller-operator-history
- **controller_controls_mine:** Rachel  Schuler → Heartland Aggregates Granite Shoals Pit; 2024-04-24 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Rachel  Schuler → Heartland Quarries, LLC; 2024-04-24 to current/open; source msha-controller-operator-history