# Relationship history for MSHA mine 4801701

Current hierarchy: **Spencer C  Fry → Fry Gravel & Excavation Inc → Cozzens 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:** CS Fry Construction → Cozzens Pit; 2006-09-27 to 2022-05-10; source msha-controller-operator-history
- **controller_controls_mine:** Christopher M  Fry et al → Cozzens Pit; 2006-09-27 to 2014-06-30; source msha-controller-operator-history
- **controller_controls_operator:** Christopher M  Fry et al → CS Fry Construction; 2006-09-27 to 2014-06-30; source msha-controller-operator-history
- **controller_controls_operator:** Robert I  Fry et al → CS Fry Construction; 2006-09-27 to 2014-06-30; source msha-controller-operator-history
- **controller_controls_mine:** Christopher M  Fry → Cozzens Pit; 2014-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Christopher M  Fry → CS Fry Construction; 2014-07-01 to 2022-05-10; source msha-controller-operator-history
- **operator_operates_mine:** Fry Gravel & Excavation Inc → Cozzens Pit; 2022-05-11 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Spencer C  Fry → Cozzens Pit; 2022-05-11 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Spencer C  Fry → Fry Gravel & Excavation Inc; 2022-05-11 to current/open; source msha-controller-operator-history