# Relationship history for MSHA mine 3401921

Current hierarchy: **James  Kane → American Materials LLC → American Materials**

- 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:** American Materials, Inc. → American Materials; 2004-02-02 to 2004-03-17; source msha-controller-operator-history
- **controller_controls_mine:** Fred  Jones → American Materials; 2004-02-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Fred  Jones → American Materials, Inc.; 2004-02-02 to 2004-03-17; source msha-controller-operator-history
- **operator_operates_mine:** American Materials LLC → American Materials; 2004-03-18 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Fred  Jones → American Materials; 2004-03-18 to 2005-02-27; source msha-controller-operator-history
- **controller_controls_operator:** Fred  Jones → American Materials LLC; 2004-03-18 to 2005-02-27; source msha-controller-operator-history
- **controller_controls_mine:** James  Kane  et al → American Materials; 2005-02-28 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** James  Kane  et al → American Materials LLC; 2005-02-28 to current/open; source msha-controller-operator-history