# Relationship history for MSHA mine 1519675

Current hierarchy: **TerraMer Incorporated → Stampede Oil Sands, Inc. → STAMPEDE MINE**

- 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:** Arrakis Oil Recovery, LLC → STAMPEDE MINE; 2012-09-07 to 2013-10-30; source msha-controller-operator-history
- **controller_controls_mine:** Imperial Petroleum Inc → STAMPEDE MINE; 2012-09-07 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Imperial Petroleum Inc → Arrakis Oil Recovery, LLC; 2012-09-07 to 2013-10-30; source msha-controller-operator-history
- **operator_operates_mine:** Stampede Oil Sands, Inc. → STAMPEDE MINE; 2013-10-31 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** TerraMer Incorporated → STAMPEDE MINE; 2013-10-31 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** TerraMer Incorporated → Stampede Oil Sands, Inc.; 2013-10-31 to current/open; source msha-controller-operator-history