# Relationship history for MSHA mine 1302334

Current hierarchy: **Michael  Gaunt; Kirk  Greenslad; Reggie  Smith → Big Stones Quarry, Inc. → Peru Iowa**

- 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:** Big Stones Quarry, Inc. → Peru Iowa; 2006-08-28 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Reggie  Smith et al → Peru Iowa; 2006-08-28 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Reggie  Smith et al → Big Stones Quarry, Inc.; 2006-08-28 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Michael  Gaunt et al → Big Stones Quarry, Inc.; 2006-08-28 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Kirk  Greenslad et al → Big Stones Quarry, Inc.; 2006-08-28 to current/open; source msha-controller-operator-history