# Relationship history for MSHA mine 2302529

Current hierarchy: **Emery Sapp Construction Inc → HUTCHENS CONSTRUCTION CO → Cone Plant Portable 3**

- 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

- **controller_controls_mine:** Phil  Hutchens → Cone Plant Portable 3; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** HUTCHENS CONSTRUCTION CO → Cone Plant Portable 3; 2019-01-29 to 2019-05-01; source msha-controller-operator-history
- **controller_controls_operator:** Phil  Hutchens → HUTCHENS CONSTRUCTION CO; 2019-01-29 to 2019-05-01; source msha-controller-operator-history
- **operator_operates_mine:** HUTCHENS CONSTRUCTION CO → Cone Plant Portable 3; 2019-05-02 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Emery Sapp & Sons Inc → Cone Plant Portable 3; 2019-05-02 to 2023-04-06; source msha-controller-operator-history
- **controller_controls_operator:** Emery Sapp & Sons Inc → HUTCHENS CONSTRUCTION CO; 2019-05-02 to 2023-04-06; source msha-controller-operator-history
- **controller_controls_mine:** Emery Sapp Construction Inc → Cone Plant Portable 3; 2023-04-07 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Emery Sapp Construction Inc → HUTCHENS CONSTRUCTION CO; 2023-04-07 to current/open; source msha-controller-operator-history