# Relationship history for MSHA mine 0801273

Current hierarchy: **Lisa Michelle  Sands; Wayne  Beaver → Denali  Mining Inc → O'Brien 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: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **operator_operates_mine:** Denali Investments Inc → O'Brien Mine; 1999-04-01 to 2000-09-30; source msha-controller-operator-history
- **controller_controls_mine:** Paul  Dickert  et al → O'Brien Mine; 1999-04-01 to 2000-09-30; source msha-controller-operator-history
- **controller_controls_operator:** Paul  Dickert  et al → Denali Investments Inc; 1999-04-01 to 2000-09-30; source msha-controller-operator-history
- **operator_operates_mine:** Denali  Investments Inc → O'Brien Mine; 2000-10-01 to 2017-01-31; source msha-controller-operator-history
- **controller_controls_mine:** Wayne M  Beaver → O'Brien Mine; 2000-10-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Wayne M  Beaver → Denali  Investments Inc; 2000-10-01 to 2017-01-31; source msha-controller-operator-history
- **operator_operates_mine:** Denali  Mining Inc → O'Brien Mine; 2017-02-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Wayne M  Beaver → O'Brien Mine; 2017-02-01 to 2024-07-31; source msha-controller-operator-history
- **controller_controls_operator:** Wayne M  Beaver → Denali  Mining Inc; 2017-02-01 to 2024-07-31; source msha-controller-operator-history
- **controller_controls_mine:** Wayne  Beaver et al → O'Brien Mine; 2024-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Wayne  Beaver et al → Denali  Mining Inc; 2024-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Lisa Michelle  Sands et al → Denali  Mining Inc; 2024-08-01 to current/open; source msha-controller-operator-history