# Relationship history for MSHA mine 0401017

Current hierarchy: **Jeff  Moseley → Robin Thomas Corporation → Clearlake Cinder Chip Co.**

- 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:** Peter Kiewit Sons' Inc → Clearlake Cinder Chip Co.; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** J P Tebbe → Clearlake Cinder Chip Co.; 1950-01-01 to 1981-09-30; source msha-controller-operator-history
- **controller_controls_mine:** J P  Tebbe → Clearlake Cinder Chip Co.; 1950-01-01 to 1981-09-30; source msha-controller-operator-history
- **controller_controls_operator:** J P  Tebbe → J P Tebbe; 1950-01-01 to 1981-09-30; source msha-controller-operator-history
- **operator_operates_mine:** Twin Mountain Rock Company → Clearlake Cinder Chip Co.; 1981-10-01 to 1985-04-01; source msha-controller-operator-history
- **controller_controls_operator:** Peter Kiewit Sons' Inc → Twin Mountain Rock Company; 1981-10-01 to 1985-04-01; source msha-controller-operator-history
- **operator_operates_mine:** Aggrelite Rock → Clearlake Cinder Chip Co.; 1985-04-02 to 2004-04-30; source msha-controller-operator-history
- **controller_controls_mine:** Bredero America Inc → Clearlake Cinder Chip Co.; 1985-04-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Bredero America Inc → Aggrelite Rock; 1985-04-02 to 2004-04-30; source msha-controller-operator-history
- **operator_operates_mine:** Robin Thomas Corporation → Clearlake Cinder Chip Co.; 2004-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Jeff  Moseley → Clearlake Cinder Chip Co.; 2004-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jeff  Moseley → Robin Thomas Corporation; 2004-05-01 to current/open; source msha-controller-operator-history