# Relationship history for MSHA mine 3402106

Current hierarchy: **Brenda L Sheets; Ted H Sheets → Diablo Stone LLC → Diablo Stone #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:** Diablo Stone → Diablo Stone #1; 2010-06-18 to 2022-08-07; source msha-controller-operator-history
- **controller_controls_mine:** Douglas R  Fisher → Diablo Stone #1; 2010-06-18 to 2015-04-20; source msha-controller-operator-history
- **controller_controls_operator:** Douglas R  Fisher → Diablo Stone; 2010-06-18 to 2015-04-20; source msha-controller-operator-history
- **controller_controls_mine:** Jonathan  Mitchell → Diablo Stone #1; 2015-04-21 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jonathan  Mitchell → Diablo Stone; 2015-04-21 to 2022-08-07; source msha-controller-operator-history
- **operator_operates_mine:** Diablo Stone LLC → Diablo Stone #1; 2022-08-08 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Brenda L Sheets et al → Diablo Stone #1; 2022-08-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Brenda L Sheets et al → Diablo Stone LLC; 2022-08-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ted H Sheets et al → Diablo Stone LLC; 2022-08-08 to current/open; source msha-controller-operator-history