# Relationship history for MSHA mine 0202347

Current hierarchy: **Jackson Andrew S → Alma School Landfill Inc → Alma School Landfill Incorporated**

- 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:** Alma School Landfill Inc → Alma School Landfill Incorporated; 1986-12-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Jackson Andrew S → Alma School Landfill Incorporated; 1986-12-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jackson Andrew S → Alma School Landfill Inc; 1986-12-01 to current/open; source msha-controller-operator-history