# Relationship history for MSHA mine 1512133

Current hierarchy: **Kazee Harold → Little Sandy Coal Sand & Gravel → No 1 Tipple**

- 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:** Everman Edgar B → No 1 Tipple; 1974-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Little Sandy Coal Sales Inc → No 1 Tipple; 1979-10-01 to 1984-11-12; source msha-controller-operator-history
- **controller_controls_operator:** Everman Edgar B → Little Sandy Coal Sales Inc; 1979-10-01 to 1984-11-12; source msha-controller-operator-history
- **controller_controls_mine:** Kelley Charles C Et Al → No 1 Tipple; 1983-12-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Sandy River Processing Inc → No 1 Tipple; 1984-11-13 to 1987-09-30; source msha-controller-operator-history
- **controller_controls_mine:** Turner Preston → No 1 Tipple; 1984-11-13 to 1987-09-30; source msha-controller-operator-history
- **controller_controls_operator:** Turner Preston → Sandy River Processing Inc; 1984-11-13 to 1987-09-30; source msha-controller-operator-history
- **operator_operates_mine:** M K M Coal Company Inc → No 1 Tipple; 1987-10-01 to 1990-10-07; source msha-controller-operator-history
- **controller_controls_operator:** Kelley Charles C Et Al → M K M Coal Company Inc; 1987-10-01 to 1990-10-07; source msha-controller-operator-history
- **operator_operates_mine:** Little Sandy Coal Sand & Gravel → No 1 Tipple; 1990-10-08 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Kazee Harold → No 1 Tipple; 1990-10-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Kazee Harold → Little Sandy Coal Sand & Gravel; 1990-10-08 to current/open; source msha-controller-operator-history