# Relationship history for MSHA mine 5100206

Current hierarchy: **Nan Chul Patrick"  Shin" → MANAWAINUI MOLOKAI QUARRY LLC → MOLOKAI 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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** Interisland Concrete & Rock → MOLOKAI QUARRY; 1991-07-01 to 2006-10-22; source msha-controller-operator-history
- **controller_controls_mine:** David E  Patterson → MOLOKAI QUARRY; 1991-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** David E  Patterson → Interisland Concrete & Rock; 1991-07-01 to 2006-10-22; source msha-controller-operator-history
- **controller_controls_mine:** Darryl  Leer → MOLOKAI QUARRY; 2006-02-09 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Tri-L Construction Inc. → MOLOKAI QUARRY; 2006-10-23 to 2024-09-30; source msha-controller-operator-history
- **controller_controls_operator:** Darryl  Leer → Tri-L Construction Inc.; 2006-10-23 to 2024-09-30; source msha-controller-operator-history
- **operator_operates_mine:** Manawainui Molokai Quarry LLC → MOLOKAI QUARRY; 2024-10-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Nan Chul Patrick"  Shin" → MOLOKAI QUARRY; 2024-10-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Nan Chul Patrick"  Shin" → Manawainui Molokai Quarry LLC; 2024-10-01 to current/open; source msha-controller-operator-history