# Relationship history for MSHA mine 4104042

Current hierarchy: **Rudy  Krisch III → San Jacinto Materials, Inc. → SISTERDALE QUARRY**

- 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:** Caballo Corporation → SISTERDALE QUARRY; 1998-11-01 to 2007-07-18; source msha-controller-operator-history
- **controller_controls_mine:** Rudy  Krisch III → SISTERDALE QUARRY; 1998-11-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Rudy  Krisch III → Caballo Corporation; 1998-11-01 to 2007-07-18; source msha-controller-operator-history
- **operator_operates_mine:** San Jacinto Materials, Inc. → SISTERDALE QUARRY; 2007-07-19 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Rudy  Krisch III → SISTERDALE QUARRY; 2007-07-19 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Rudy  Krisch III → San Jacinto Materials, Inc.; 2007-07-19 to current/open; source msha-controller-operator-history