# Relationship history for MSHA mine 0301615

Current hierarchy: **Jeff  Burrow → Crystal City, Inc → COLLIER CREEK**

- 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:** Jeff  Burrow et al → COLLIER CREEK; 1987-08-01 to 2021-10-12; source msha-controller-operator-history
- **operator_operates_mine:** Burrow Mining Company Llc → COLLIER CREEK; 1989-10-01 to 2009-07-19; source msha-controller-operator-history
- **controller_controls_mine:** Jeff  Burrow et al → COLLIER CREEK; 1989-10-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jeff  Burrow et al → Burrow Mining Company Llc; 1989-10-01 to 2009-07-19; source msha-controller-operator-history
- **controller_controls_operator:** Don  Burrow  et al → Burrow Mining Company Llc; 1989-10-01 to 2009-07-19; source msha-controller-operator-history
- **operator_operates_mine:** Crystal City, Inc → COLLIER CREEK; 2009-07-20 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jeff  Burrow et al → Crystal City, Inc; 2009-07-20 to 2021-10-12; source msha-controller-operator-history
- **controller_controls_operator:** Don  Burrow  et al → Crystal City, Inc; 2009-07-20 to 2021-10-12; source msha-controller-operator-history
- **controller_controls_mine:** Jeff  Burrow → COLLIER CREEK; 2021-10-13 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jeff  Burrow → Crystal City, Inc; 2021-10-13 to current/open; source msha-controller-operator-history