# Relationship history for MSHA mine 4202657

Current hierarchy: **Edward J  Roberts; Ryan D  Clark → Fruitland Rock Products LLC → Sawmill 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

- **controller_controls_mine:** Bert J  Carter et al → Sawmill Pit; 2015-02-17 to 2016-07-05; source msha-controller-operator-history
- **operator_operates_mine:** Fruitland Rock Products LLC → Sawmill Pit; 2016-02-18 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Bert J  Carter et al → Fruitland Rock Products LLC; 2016-02-18 to 2016-07-05; source msha-controller-operator-history
- **controller_controls_operator:** Edward Jay  Roberts et al → Fruitland Rock Products LLC; 2016-02-18 to 2016-07-05; source msha-controller-operator-history
- **controller_controls_mine:** Bert J  Carter et al → Sawmill Pit; 2016-07-06 to 2024-08-31; source msha-controller-operator-history
- **controller_controls_operator:** Bert J  Carter et al → Fruitland Rock Products LLC; 2016-07-06 to 2024-08-31; source msha-controller-operator-history
- **controller_controls_operator:** Edward Jay  Roberts et al → Fruitland Rock Products LLC; 2016-07-06 to 2024-08-31; source msha-controller-operator-history
- **controller_controls_operator:** Ryan D  Clark et al → Fruitland Rock Products LLC; 2016-07-06 to 2024-08-31; source msha-controller-operator-history
- **controller_controls_mine:** Ryan D  Clark et al → Sawmill Pit; 2024-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ryan D  Clark et al → Fruitland Rock Products LLC; 2024-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Edward J  Roberts et al → Fruitland Rock Products LLC; 2024-09-01 to current/open; source msha-controller-operator-history