# Relationship history for MSHA mine 0801417

Current hierarchy: **C R  Campbell Sr → Sand & Dirt, Inc. → Molino Pit**

- 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

- **controller_controls_mine:** C R  Campbell Sr et al → Molino Pit; 1990-08-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Sand & Dirt, Inc → Molino Pit; 2017-10-12 to 2019-09-30; source msha-controller-operator-history
- **controller_controls_operator:** C R  Campbell Sr et al → Sand & Dirt, Inc; 2017-10-12 to 2019-09-30; source msha-controller-operator-history
- **operator_operates_mine:** C&C Hauling CO. → Molino Pit; 2019-10-01 to 2022-11-06; source msha-controller-operator-history
- **controller_controls_mine:** C R  Campbell III et al → Molino Pit; 2019-10-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** C R  Campbell III et al → C&C Hauling CO.; 2019-10-01 to 2022-11-06; source msha-controller-operator-history
- **controller_controls_operator:** C R  Campbell Sr et al → C&C Hauling CO.; 2019-10-01 to 2022-11-06; source msha-controller-operator-history
- **operator_operates_mine:** Sand & Dirt, Inc. → Molino Pit; 2022-11-07 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** C R  Campbell Sr et al → Sand & Dirt, Inc.; 2022-11-07 to current/open; source msha-controller-operator-history