# Relationship history for MSHA mine 3610213

Current hierarchy: **East SM, LLC → Summit Anthracite Inc. → Summit Quarry**

- 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:** John  Scheib et al → Summit Quarry; 1989-05-17 to 2020-10-14; source msha-controller-operator-history
- **operator_operates_mine:** Summit Anthracite Inc. → Summit Quarry; 2017-04-03 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** John  Scheib et al → Summit Anthracite Inc.; 2017-04-03 to 2020-10-14; source msha-controller-operator-history
- **controller_controls_operator:** Michael  Rothermel et al → Summit Anthracite Inc.; 2017-04-03 to 2020-10-14; source msha-controller-operator-history
- **controller_controls_mine:** Stavola Holdings Pennsylvania LLC → Summit Quarry; 2020-10-15 to 2024-09-30; source msha-controller-operator-history
- **controller_controls_operator:** Stavola Holdings Pennsylvania LLC → Summit Anthracite Inc.; 2020-10-15 to 2024-09-30; source msha-controller-operator-history
- **controller_controls_mine:** East SM, LLC → Summit Quarry; 2024-10-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** East SM, LLC → Summit Anthracite Inc.; 2024-10-01 to current/open; source msha-controller-operator-history