# Relationship history for MSHA mine 2602270

Current hierarchy: **North Cliff Corporation → Badger Mining Corporation → BMC Eastgate Division**

- 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

- **controller_controls_mine:** Amcol International Corp → BMC Eastgate Division; 1950-01-01 to 2014-07-30; source msha-controller-operator-history
- **controller_controls_mine:** Timothy J  Wuest → BMC Eastgate Division; 1950-01-01 to 2023-10-24; source msha-controller-operator-history
- **operator_operates_mine:** American Colloid Company Minerals Group → BMC Eastgate Division; 1995-02-01 to 1999-03-04; source msha-controller-operator-history
- **controller_controls_operator:** Amcol International Corp → American Colloid Company Minerals Group; 1995-02-01 to 1999-03-04; source msha-controller-operator-history
- **operator_operates_mine:** Rock Springs Mineral Processing → BMC Eastgate Division; 1999-03-05 to 2001-12-20; source msha-controller-operator-history
- **controller_controls_mine:** Robert  Nolind et al → BMC Eastgate Division; 1999-03-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Robert  Nolind et al → Rock Springs Mineral Processing; 1999-03-05 to 2001-12-20; source msha-controller-operator-history
- **operator_operates_mine:** Badger Mining Corporation → BMC Eastgate Division; 2001-12-21 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Timothy J  Wuest → Badger Mining Corporation; 2001-12-21 to 2023-10-24; source msha-controller-operator-history
- **controller_controls_mine:** Minerals Technologies Inc → BMC Eastgate Division; 2014-07-31 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Minerals Technologies Inc → American Colloid Company Minerals Group; 2014-07-31 to 1999-03-04; source msha-controller-operator-history
- **controller_controls_mine:** North Cliff Corporation → BMC Eastgate Division; 2023-10-25 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** North Cliff Corporation → Badger Mining Corporation; 2023-10-25 to current/open; source msha-controller-operator-history