# Relationship history for MSHA mine 2800756

Current hierarchy: **East SM, LLC → Stavola Construction Materials, Inc → Stavola Beaver Run Quarry,Inc.**

- 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

- **operator_operates_mine:** Beaver Run Farms → Stavola Beaver Run Quarry,Inc.; 1950-01-01 to 2016-09-01; source msha-controller-operator-history
- **controller_controls_mine:** Charles  Shotmeyer  et al → Stavola Beaver Run Quarry,Inc.; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Charles  Shotmeyer  et al → Beaver Run Farms; 1950-01-01 to 2016-09-01; source msha-controller-operator-history
- **controller_controls_operator:** Henry  Shotmeyer  et al → Beaver Run Farms; 1950-01-01 to 2016-09-01; source msha-controller-operator-history
- **controller_controls_mine:** Richard J  Stavola et al → Stavola Beaver Run Quarry,Inc.; 1978-04-01 to 2024-09-30; source msha-controller-operator-history
- **operator_operates_mine:** Stavola Construction Materials, Inc → Stavola Beaver Run Quarry,Inc.; 2016-09-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Richard J  Stavola et al → Stavola Construction Materials, Inc; 2016-09-02 to 2024-09-30; source msha-controller-operator-history
- **controller_controls_operator:** Joseph  Stavola III et al → Stavola Construction Materials, Inc; 2016-09-02 to 2024-09-30; source msha-controller-operator-history
- **controller_controls_mine:** East SM, LLC → Stavola Beaver Run Quarry,Inc.; 2024-10-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** East SM, LLC → Stavola Construction Materials, Inc; 2024-10-01 to current/open; source msha-controller-operator-history