# Relationship history for MSHA mine 3607328

Current hierarchy: **East SM, LLC → Summit Anthracite Inc → Tracy Vein Slope**

- 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:** Jeff Coal Company Inc → Tracy Vein Slope; 1982-06-01 to 1985-08-25; source msha-controller-operator-history
- **controller_controls_mine:** Alfred R  Harner → Tracy Vein Slope; 1982-06-01 to 1985-08-25; source msha-controller-operator-history
- **controller_controls_operator:** Alfred R  Harner → Jeff Coal Company Inc; 1982-06-01 to 1985-08-25; source msha-controller-operator-history
- **operator_operates_mine:** Jeff Coal Company Inc → Tracy Vein Slope; 1985-08-26 to 1988-12-06; source msha-controller-operator-history
- **controller_controls_mine:** Carl  Neidlinger et al → Tracy Vein Slope; 1985-08-26 to 1988-12-06; source msha-controller-operator-history
- **controller_controls_operator:** Carl  Neidlinger et al → Jeff Coal Company Inc; 1985-08-26 to 1988-12-06; source msha-controller-operator-history
- **operator_operates_mine:** Jeff Coal Company → Tracy Vein Slope; 1988-12-07 to 1989-05-16; source msha-controller-operator-history
- **controller_controls_mine:** Terry  Reiner et al → Tracy Vein Slope; 1988-12-07 to 1989-05-16; source msha-controller-operator-history
- **controller_controls_operator:** Terry  Reiner et al → Jeff Coal Company; 1988-12-07 to 1989-05-16; source msha-controller-operator-history
- **operator_operates_mine:** Summit Anthracite Inc → Tracy Vein Slope; 1989-05-17 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** John  Scheib et al → Tracy Vein Slope; 1989-05-17 to 2020-10-14; source msha-controller-operator-history
- **controller_controls_operator:** John  Scheib et al → Summit Anthracite Inc; 1989-05-17 to 2020-10-14; source msha-controller-operator-history
- **controller_controls_operator:** Michael  Rothermel et al → Summit Anthracite Inc; 1989-05-17 to 2020-10-14; source msha-controller-operator-history
- **controller_controls_mine:** Stavola Holdings Pennsylvania LLC → Tracy Vein Slope; 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 → Tracy Vein Slope; 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