# Relationship history for MSHA mine 2101284

Current hierarchy: **Tom J Paulson; Mike  Paulson → Stussy Construction → Portable Washing Plant No 1**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-18T09:31:49.615908+00:00

## Valid-time edges

- **operator_operates_mine:** Stussy Construction → Portable Washing Plant No 1; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** James D  Paulson et al → Portable Washing Plant No 1; 1950-01-01 to 2022-05-24; source msha-controller-operator-history
- **controller_controls_operator:** James D  Paulson et al → Stussy Construction; 1950-01-01 to 2022-05-24; source msha-controller-operator-history
- **controller_controls_mine:** Tom J Paulson et al → Portable Washing Plant No 1; 2022-05-25 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Tom J Paulson et al → Stussy Construction; 2022-05-25 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Mike  Paulson et al → Stussy Construction; 2022-05-25 to current/open; source msha-controller-operator-history