# Relationship history for MSHA mine 1301626

Current hierarchy: **Paul B  Sieh; James L  Sieh → Sieh Farm Drainage Inc → Sieh Sand & Gravel**

- 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:** Hallett Construction Company → Sieh Sand & Gravel; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Larry E  Moore → Sieh Sand & Gravel; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Everds Brothers Inc → Sieh Sand & Gravel; 1950-01-01 to 1978-04-30; source msha-controller-operator-history
- **controller_controls_mine:** Everds Brothers Inc → Sieh Sand & Gravel; 1950-01-01 to 1978-04-30; source msha-controller-operator-history
- **controller_controls_operator:** Everds Brothers Inc → Everds Brothers Inc; 1950-01-01 to 1978-04-30; source msha-controller-operator-history
- **operator_operates_mine:** Hallett Construction Company → Sieh Sand & Gravel; 1978-05-01 to 1983-08-14; source msha-controller-operator-history
- **controller_controls_operator:** Hallett Construction Company → Hallett Construction Company; 1978-05-01 to 1983-08-14; source msha-controller-operator-history
- **operator_operates_mine:** Mid-West Construction Materials Company → Sieh Sand & Gravel; 1983-08-15 to 1986-03-26; source msha-controller-operator-history
- **controller_controls_operator:** Larry E  Moore → Mid-West Construction Materials Company; 1983-08-15 to 1986-03-26; source msha-controller-operator-history
- **operator_operates_mine:** Sieh Farm Drainage Inc → Sieh Sand & Gravel; 1986-03-27 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Janice E  Sieh → Sieh Sand & Gravel; 1986-03-27 to 2008-02-24; source msha-controller-operator-history
- **controller_controls_operator:** Janice E  Sieh → Sieh Farm Drainage Inc; 1986-03-27 to 2008-02-24; source msha-controller-operator-history
- **controller_controls_mine:** Paul B  Sieh et al → Sieh Sand & Gravel; 2008-02-25 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Paul B  Sieh et al → Sieh Farm Drainage Inc; 2008-02-25 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** James L  Sieh et al → Sieh Farm Drainage Inc; 2008-02-25 to current/open; source msha-controller-operator-history