# Relationship history for MSHA mine 2801032

Current hierarchy: **East SM, LLC → Stavola Construction Materials, Inc → Millstone Sand & Gravel 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

- **controller_controls_mine:** Richard J  Stavola et al → Millstone Sand & Gravel Pit; 1978-04-01 to 2024-09-30; source msha-controller-operator-history
- **operator_operates_mine:** Stavola Asphalt Company → Millstone Sand & Gravel Pit; 2010-04-06 to 2016-08-03; source msha-controller-operator-history
- **controller_controls_mine:** Richard J  Stavola et al → Millstone Sand & Gravel Pit; 2010-04-06 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Richard J  Stavola et al → Stavola Asphalt Company; 2010-04-06 to 2016-08-03; source msha-controller-operator-history
- **controller_controls_operator:** Joseph  Stavola III et al → Stavola Asphalt Company; 2010-04-06 to 2016-08-03; source msha-controller-operator-history
- **operator_operates_mine:** Stavola Construction Materials, Inc → Millstone Sand & Gravel Pit; 2016-08-04 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Richard J  Stavola et al → Stavola Construction Materials, Inc; 2016-08-04 to 2024-09-30; source msha-controller-operator-history
- **controller_controls_operator:** Joseph  Stavola III et al → Stavola Construction Materials, Inc; 2016-08-04 to 2024-09-30; source msha-controller-operator-history
- **controller_controls_mine:** East SM, LLC → Millstone Sand & Gravel Pit; 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