# Relationship history for MSHA mine 2100096

Current hierarchy: **Tom J Paulson; Mike  Paulson → Stussy Construction Inc → Stussy Construction-Portable Crusher #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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** Quarve & Anderson Company → Stussy Construction-Portable Crusher #1; 1950-01-01 to 1981-07-13; source msha-controller-operator-history
- **controller_controls_mine:** Quarve & Anderson Company → Stussy Construction-Portable Crusher #1; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Quarve & Anderson Company → Quarve & Anderson Company; 1950-01-01 to 1981-07-13; source msha-controller-operator-history
- **controller_controls_mine:** James D  Paulson et al → Stussy Construction-Portable Crusher #1; 1950-01-01 to 2022-05-24; source msha-controller-operator-history
- **operator_operates_mine:** Stussy Construction Inc → Stussy Construction-Portable Crusher #1; 1981-07-14 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** James D  Paulson et al → Stussy Construction Inc; 1981-07-14 to 2022-05-24; source msha-controller-operator-history
- **controller_controls_mine:** Tom J Paulson et al → Stussy Construction-Portable Crusher #1; 2022-05-25 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Tom J Paulson et al → Stussy Construction Inc; 2022-05-25 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Mike  Paulson et al → Stussy Construction Inc; 2022-05-25 to current/open; source msha-controller-operator-history