# Relationship history for MSHA mine 4609443

Current hierarchy: **Jeffery S.  Kinser → Powdermill Processing Inc → Stone Mine No. 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:** Powdermill Processing Inc. → Stone Mine No. 1; 2011-12-12 to 2018-03-28; source msha-controller-operator-history
- **controller_controls_mine:** Jeffery S.  Kinser → Stone Mine No. 1; 2011-12-12 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jeffery S.  Kinser → Powdermill Processing Inc.; 2011-12-12 to 2018-03-28; source msha-controller-operator-history
- **controller_controls_mine:** Justin  Carter → Stone Mine No. 1; 2018-02-28 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Calcutta Energy Inc. → Stone Mine No. 1; 2018-03-29 to 2018-10-17; source msha-controller-operator-history
- **controller_controls_operator:** Justin  Carter → Calcutta Energy Inc.; 2018-03-29 to 2018-10-17; source msha-controller-operator-history
- **operator_operates_mine:** Powdermill Processing Inc → Stone Mine No. 1; 2018-10-18 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jeffery S.  Kinser → Powdermill Processing Inc; 2018-10-18 to current/open; source msha-controller-operator-history