# Relationship history for MSHA mine 4703375

Current hierarchy: **Randy J  Mancl → Mancl's Excavating & Lawn Care LLC → Cedar Rapids #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:** Mancl's Excavating → Cedar Rapids #1; 2004-03-31 to 2025-04-14; source msha-controller-operator-history
- **controller_controls_mine:** Randy J  Mancl → Cedar Rapids #1; 2004-03-31 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Randy J  Mancl → Mancl's Excavating; 2004-03-31 to 2025-04-14; source msha-controller-operator-history
- **operator_operates_mine:** Mancl's Excavating & Lawn Care LLC → Cedar Rapids #1; 2025-04-15 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Randy J  Mancl → Cedar Rapids #1; 2025-04-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Randy J  Mancl → Mancl's Excavating & Lawn Care LLC; 2025-04-15 to current/open; source msha-controller-operator-history