# Relationship history for MSHA mine 2100083

Current hierarchy: **Mike  Paulson; Tom  Paulson → Paulson Rock Products → Portable Crusher #2**

- 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:** Stussy Construction → Portable Crusher #2; 1950-01-01 to 2003-04-30; source msha-controller-operator-history
- **controller_controls_mine:** James D  Paulson et al → Portable Crusher #2; 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 2003-04-30; source msha-controller-operator-history
- **operator_operates_mine:** Paulson Rock Products → Portable Crusher #2; 2003-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** James D  Paulson et al → Portable Crusher #2; 2003-05-01 to 2019-08-01; source msha-controller-operator-history
- **controller_controls_operator:** James D  Paulson et al → Paulson Rock Products; 2003-05-01 to 2019-08-01; source msha-controller-operator-history
- **controller_controls_mine:** Mike  Paulson et al → Portable Crusher #2; 2019-08-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Mike  Paulson et al → Paulson Rock Products; 2019-08-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Tom  Paulson et al → Paulson Rock Products; 2019-08-02 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Mike  Paulson et al → Portable Crusher #2; 2022-05-25 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Mike  Paulson et al → Stussy Construction; 2022-05-25 to 2003-04-30; source msha-controller-operator-history
- **controller_controls_operator:** Tom J Paulson et al → Stussy Construction; 2022-05-25 to 2003-04-30; source msha-controller-operator-history