# Relationship history for MSHA mine 4700952

Current hierarchy: **Jeanne  Luckow; Marji  King → New Valley Sand & Gravel Company → 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:** Valley Sand & Gravel Company Inc → VALLEY PIT; 1950-01-01 to 1996-01-31; source msha-controller-operator-history
- **controller_controls_mine:** Annette  Luckow → VALLEY PIT; 1950-01-01 to 1996-01-31; source msha-controller-operator-history
- **controller_controls_operator:** Annette  Luckow → Valley Sand & Gravel Company Inc; 1950-01-01 to 1996-01-31; source msha-controller-operator-history
- **operator_operates_mine:** New Valley Sand & Gravel Company → VALLEY PIT; 1996-02-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Jeanne  Luckow et al → VALLEY PIT; 1996-02-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jeanne  Luckow et al → New Valley Sand & Gravel Company; 1996-02-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Marji  King et al → New Valley Sand & Gravel Company; 1996-02-01 to current/open; source msha-controller-operator-history