# Relationship history for MSHA mine 3607479

Current hierarchy: **Shear Hal B & Richard B Shepperson → Tamaqua Anthracite Company → Banning Site**

- 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:** J E Z Inc → Banning Site; 1983-06-01 to 1985-04-21; source msha-controller-operator-history
- **controller_controls_mine:** Zaprazny Joseph & Kevin Bell → Banning Site; 1983-06-01 to 1985-04-21; source msha-controller-operator-history
- **controller_controls_operator:** Zaprazny Joseph & Kevin Bell → J E Z Inc; 1983-06-01 to 1985-04-21; source msha-controller-operator-history
- **operator_operates_mine:** Tamaqua Anthracite Company → Banning Site; 1985-04-22 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Shear Hal B & Richard B Shepperson → Banning Site; 1985-04-22 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Shear Hal B & Richard B Shepperson → Tamaqua Anthracite Company; 1985-04-22 to current/open; source msha-controller-operator-history