# Relationship history for MSHA mine 1000976

Current hierarchy: **Gray George & Dave → Micro Gold #2 Partnership → Llorain Lode #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:** Powell Mining Company → Llorain Lode #1; 1950-01-01 to 1983-03-29; source msha-controller-operator-history
- **controller_controls_mine:** Powell Craig W Roy & Bill Et Al → Llorain Lode #1; 1950-01-01 to 1983-03-29; source msha-controller-operator-history
- **controller_controls_operator:** Powell Craig W Roy & Bill Et Al → Powell Mining Company; 1950-01-01 to 1983-03-29; source msha-controller-operator-history
- **operator_operates_mine:** Micro Gold #2 Partnership → Llorain Lode #1; 1983-03-30 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Gray George & Dave → Llorain Lode #1; 1983-03-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Gray George & Dave → Micro Gold #2 Partnership; 1983-03-30 to current/open; source msha-controller-operator-history