# Relationship history for MSHA mine 3700208

Current hierarchy: **Evelyn J  Smith → Shoreline Gravel LLC → Shoreline Gravel-Narrow Lane Bank**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-18T09:31:49.615908+00:00

## Valid-time edges

- **operator_operates_mine:** Shoreline Gravel  Co. → Shoreline Gravel-Narrow Lane Bank; 2009-02-24 to 2015-03-31; source msha-controller-operator-history
- **controller_controls_mine:** Evelyn J  Smith → Shoreline Gravel-Narrow Lane Bank; 2009-02-24 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Evelyn J  Smith → Shoreline Gravel  Co.; 2009-02-24 to 2015-03-31; source msha-controller-operator-history
- **operator_operates_mine:** Shoreline Gravel LLC → Shoreline Gravel-Narrow Lane Bank; 2015-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Evelyn J  Smith → Shoreline Gravel-Narrow Lane Bank; 2015-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Evelyn J  Smith → Shoreline Gravel LLC; 2015-04-01 to current/open; source msha-controller-operator-history