# Relationship history for MSHA mine 3610021

Current hierarchy: **Jacob W McCullough; Nicole L McCullough → McCullough Enterprises, LLC → Ralph Six- Mine 11**

- 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:** Michael T  McCullough → Ralph Six- Mine 11; 1994-06-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** BLACK HAWK MINING, INC → Ralph Six- Mine 11; 2012-08-21 to 2020-02-09; source msha-controller-operator-history
- **controller_controls_operator:** Michael T  McCullough → BLACK HAWK MINING, INC; 2012-08-21 to 2020-02-09; source msha-controller-operator-history
- **operator_operates_mine:** McCullough Enterprises, LLC → Ralph Six- Mine 11; 2020-02-10 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Nicole L McCullough et al → Ralph Six- Mine 11; 2020-02-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Nicole L McCullough et al → McCullough Enterprises, LLC; 2020-02-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jacob W McCullough et al → McCullough Enterprises, LLC; 2020-02-10 to current/open; source msha-controller-operator-history