# Relationship history for MSHA mine 4102254

Current hierarchy: **Chesser Gaylon & Jim Walters → C & W Enterprises → Little Sandy Sand 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:** L O Block → Little Sandy Sand Pit; 1950-01-01 to 1983-08-16; source msha-controller-operator-history
- **controller_controls_mine:** Block L O → Little Sandy Sand Pit; 1950-01-01 to 1983-08-16; source msha-controller-operator-history
- **controller_controls_operator:** Block L O → L O Block; 1950-01-01 to 1983-08-16; source msha-controller-operator-history
- **operator_operates_mine:** Beeco → Little Sandy Sand Pit; 1983-08-17 to 1984-10-15; source msha-controller-operator-history
- **controller_controls_mine:** Leslie Dean  Eitel → Little Sandy Sand Pit; 1983-08-17 to 1991-06-30; source msha-controller-operator-history
- **controller_controls_operator:** Leslie Dean  Eitel → Beeco; 1983-08-17 to 1984-10-15; source msha-controller-operator-history
- **controller_controls_mine:** Anderson Hill → Little Sandy Sand Pit; 1984-02-02 to 1985-12-09; source msha-controller-operator-history
- **operator_operates_mine:** Little Sandy Sand Pit → Little Sandy Sand Pit; 1984-10-16 to 1985-12-09; source msha-controller-operator-history
- **controller_controls_operator:** Anderson Hill → Little Sandy Sand Pit; 1984-10-16 to 1985-12-09; source msha-controller-operator-history
- **operator_operates_mine:** C & W Enterprises → Little Sandy Sand Pit; 1985-12-10 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Chesser Gaylon & Jim Walters → Little Sandy Sand Pit; 1985-12-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Chesser Gaylon & Jim Walters → C & W Enterprises; 1985-12-10 to current/open; source msha-controller-operator-history