# Relationship history for MSHA mine 4202638

Current hierarchy: **Eric  Maynes → Valley View Rock Products LLC → Cedar Valley 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: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **operator_operates_mine:** Great Western Sand & Gravel → Cedar Valley Pit; 2014-10-15 to 2018-12-31; source msha-controller-operator-history
- **controller_controls_mine:** Rebecca  Spencer → Cedar Valley Pit; 2014-10-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Rebecca  Spencer → Great Western Sand & Gravel; 2014-10-15 to 2018-12-31; source msha-controller-operator-history
- **operator_operates_mine:** Valley View Rock Products, LLC → Cedar Valley Pit; 2019-01-01 to 2023-11-08; source msha-controller-operator-history
- **controller_controls_mine:** Eric  Maynes → Cedar Valley Pit; 2019-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Eric  Maynes → Valley View Rock Products, LLC; 2019-01-01 to 2023-11-08; source msha-controller-operator-history
- **operator_operates_mine:** Cedar Fort Mining, LLC → Cedar Valley Pit; 2023-11-09 to 2024-11-04; source msha-controller-operator-history
- **controller_controls_mine:** Michael  Walker et al → Cedar Valley Pit; 2023-11-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Michael  Walker et al → Cedar Fort Mining, LLC; 2023-11-09 to 2024-11-04; source msha-controller-operator-history
- **controller_controls_operator:** Dusten L Heugly et al → Cedar Fort Mining, LLC; 2023-11-09 to 2024-11-04; source msha-controller-operator-history
- **operator_operates_mine:** Valley View Rock Products LLC → Cedar Valley Pit; 2024-11-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Eric  Maynes → Valley View Rock Products LLC; 2024-11-05 to current/open; source msha-controller-operator-history