# Relationship history for MSHA mine 5001689

Current hierarchy: **Dennis A Hanson; Denise J Hanson → R A Hanson Company LLC → Platinum Creek Mine**

- 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:** Hanson Industries Inc → Platinum Creek Mine; 2001-03-01 to 2008-03-31; source msha-controller-operator-history
- **controller_controls_mine:** Raymond A  Hanson → Platinum Creek Mine; 2001-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Raymond A  Hanson → Hanson Industries Inc; 2001-03-01 to 2008-03-31; source msha-controller-operator-history
- **operator_operates_mine:** XS Platinum Inc. → Platinum Creek Mine; 2008-04-01 to 2012-10-11; source msha-controller-operator-history
- **controller_controls_mine:** Bruce  Butcher → Platinum Creek Mine; 2008-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Bruce  Butcher → XS Platinum Inc.; 2008-04-01 to 2012-10-11; source msha-controller-operator-history
- **operator_operates_mine:** R A Hanson Company LLC → Platinum Creek Mine; 2012-10-12 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Denise J Hanson et al → Platinum Creek Mine; 2012-10-12 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Denise J Hanson et al → R A Hanson Company LLC; 2012-10-12 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Dennis A Hanson et al → R A Hanson Company LLC; 2012-10-12 to current/open; source msha-controller-operator-history