# Relationship history for MSHA mine 3101970

Current hierarchy: **John Alexander Lindsay → 401 Sand Company, LLC → 401 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:** Raeford Sand & Gravel Inc → 401 Sand Pit; 1984-09-01 to 1986-12-17; source msha-controller-operator-history
- **controller_controls_mine:** Mike  Mc Neill → 401 Sand Pit; 1984-09-01 to 1986-12-17; source msha-controller-operator-history
- **controller_controls_operator:** Mike  Mc Neill → Raeford Sand & Gravel Inc; 1984-09-01 to 1986-12-17; source msha-controller-operator-history
- **operator_operates_mine:** 401 Sand Company → 401 Sand Pit; 1986-12-18 to 2023-07-08; source msha-controller-operator-history
- **controller_controls_mine:** John A  Lindsay et al → 401 Sand Pit; 1986-12-18 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** John A  Lindsay et al → 401 Sand Company; 1986-12-18 to 2023-07-08; source msha-controller-operator-history
- **operator_operates_mine:** 401 Sand Company, LLC → 401 Sand Pit; 2023-07-09 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** John Alexander Lindsay → 401 Sand Pit; 2023-07-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** John Alexander Lindsay → 401 Sand Company, LLC; 2023-07-09 to current/open; source msha-controller-operator-history