# Relationship history for MSHA mine 1103317

Current hierarchy: **Kurt  Haas; Winston  Storey → PMark Quarry Inc. → PMark Quarry Inc.**

- 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:** PMark Quarry Inc. → PMark Quarry Inc.; 2025-05-06 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Winston  Storey et al → PMark Quarry Inc.; 2025-05-06 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Winston  Storey et al → PMark Quarry Inc.; 2025-05-06 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Kurt  Haas et al → PMark Quarry Inc.; 2025-05-06 to current/open; source msha-controller-operator-history