# Relationship history for MSHA mine 1401833

Current hierarchy: **Cody Joseph Michaelis; Tammy Marie Michaelis → Frontier Native Stone LLC → Hendricks Creek Quarry**

- 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

- **operator_operates_mine:** Mill Creek Stone Quarries LLC → Hendricks Creek Quarry; 2023-01-31 to 2023-10-29; source msha-controller-operator-history
- **controller_controls_mine:** Chad  Breiner → Hendricks Creek Quarry; 2023-02-06 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Chad  Breiner → Mill Creek Stone Quarries LLC; 2023-02-06 to 2023-10-29; source msha-controller-operator-history
- **operator_operates_mine:** Frontier Native Stone LLC → Hendricks Creek Quarry; 2023-10-30 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Cody Joseph Michaelis et al → Hendricks Creek Quarry; 2023-10-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Cody Joseph Michaelis et al → Frontier Native Stone LLC; 2023-10-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Tammy Marie Michaelis et al → Frontier Native Stone LLC; 2023-10-30 to current/open; source msha-controller-operator-history