# Relationship history for MSHA mine 2003041

Current hierarchy: **Bradley J Parrish; Leon F Parrish → Parrish Excavating, Inc. → PLANT 1**

- 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:** Davenport Excavating & Grading Inc → PLANT 1; 1997-11-01 to 2020-04-14; source msha-controller-operator-history
- **controller_controls_mine:** Warner S  Davenport Jr → PLANT 1; 1997-11-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Warner S  Davenport Jr → Davenport Excavating & Grading Inc; 1997-11-01 to 2020-04-14; source msha-controller-operator-history
- **operator_operates_mine:** Parrish Excavating, Inc. → PLANT 1; 2020-04-15 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Leon F Parrish et al → PLANT 1; 2020-04-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Leon F Parrish et al → Parrish Excavating, Inc.; 2020-04-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Bradley J Parrish et al → Parrish Excavating, Inc.; 2020-04-15 to current/open; source msha-controller-operator-history