# Relationship history for MSHA mine 4407339

Current hierarchy: **Dan T  Brown → Earth Resources, Inc. → Earth Resources Inc**

- 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:** Earth Resources, Inc. → Earth Resources Inc; 2015-03-18 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Warren J  Brown et al → Earth Resources Inc; 2015-03-18 to 2022-02-28; source msha-controller-operator-history
- **controller_controls_operator:** Warren J  Brown et al → Earth Resources, Inc.; 2015-03-18 to 2022-02-28; source msha-controller-operator-history
- **controller_controls_operator:** Dan T  Brown et al → Earth Resources, Inc.; 2015-03-18 to 2022-02-28; source msha-controller-operator-history
- **controller_controls_mine:** Dan T  Brown → Earth Resources Inc; 2022-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Dan T  Brown → Earth Resources, Inc.; 2022-03-01 to current/open; source msha-controller-operator-history