# Relationship history for MSHA mine 2402386

Current hierarchy: **Scott  Puppe → E. S. Stone & Structure, Inc. → E S Stone and Structure Mobile 2**

- 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:** Eric  Johnson  et al → E S Stone and Structure Mobile 2; 2002-03-13 to 2019-04-30; source msha-controller-operator-history
- **operator_operates_mine:** E. S. Stone & Structure, Inc. → E S Stone and Structure Mobile 2; 2004-11-24 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Eric  Johnson  et al → E. S. Stone & Structure, Inc.; 2004-11-24 to 2019-04-30; source msha-controller-operator-history
- **controller_controls_operator:** Scott  Puppe  et al → E. S. Stone & Structure, Inc.; 2004-11-24 to 2019-04-30; source msha-controller-operator-history
- **controller_controls_mine:** Scott  Puppe → E S Stone and Structure Mobile 2; 2019-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Scott  Puppe → E. S. Stone & Structure, Inc.; 2019-05-01 to current/open; source msha-controller-operator-history