# Relationship history for MSHA mine 2103265

Current hierarchy: **Richard  Lorentz; Gene  Arnt → Rochester Const. Co. Inc. → Kaul Pit**

- 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:** Rochester Const. Co. Inc. → Kaul Pit; 2000-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Gene  Arnt et al → Kaul Pit; 2000-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Gene  Arnt et al → Rochester Const. Co. Inc.; 2000-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Richard  Lorentz et al → Rochester Const. Co. Inc.; 2000-08-01 to current/open; source msha-controller-operator-history