# Relationship history for MSHA mine 4609417

Current hierarchy: **Ramaco Resources Inc → Ramaco Resources, LLC → 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

- **controller_controls_mine:** CONSOL Energy Inc → No. 1; 1950-01-01 to 2013-12-04; source msha-controller-operator-history
- **operator_operates_mine:** Consolidation Coal Company → No. 1; 2011-05-10 to 2012-02-14; source msha-controller-operator-history
- **controller_controls_operator:** CONSOL Energy Inc → Consolidation Coal Company; 2011-05-10 to 2012-02-14; source msha-controller-operator-history
- **operator_operates_mine:** Black Arrow Coal Corporation → No. 1; 2012-02-15 to 2017-01-01; source msha-controller-operator-history
- **controller_controls_mine:** Jerry  Skeens  et al → No. 1; 2012-02-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jerry  Skeens  et al → Black Arrow Coal Corporation; 2012-02-15 to 2017-01-01; source msha-controller-operator-history
- **controller_controls_operator:** Eddie  Skeens  et al → Black Arrow Coal Corporation; 2012-02-15 to 2017-01-01; source msha-controller-operator-history
- **controller_controls_mine:** Michael D Bauersachs → No. 1; 2012-04-27 to 2016-12-31; source msha-controller-operator-history
- **controller_controls_mine:** Robert E  Murray → No. 1; 2013-12-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Robert E  Murray → Consolidation Coal Company; 2013-12-05 to 2012-02-14; source msha-controller-operator-history
- **controller_controls_mine:** Coronado Coal LLC → No. 1; 2016-03-31 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Ramaco Resources Inc → No. 1; 2017-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Buchanan Minerals, LLC → No. 1; 2017-01-02 to 2021-12-12; source msha-controller-operator-history
- **controller_controls_operator:** Coronado Coal LLC → Buchanan Minerals, LLC; 2017-01-02 to 2021-12-12; source msha-controller-operator-history
- **operator_operates_mine:** Ramaco Resources, LLC → No. 1; 2021-12-13 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Michael D Bauersachs → Ramaco Resources, LLC; 2021-12-13 to 2016-12-31; source msha-controller-operator-history
- **controller_controls_operator:** Ramaco Resources Inc → Ramaco Resources, LLC; 2021-12-13 to current/open; source msha-controller-operator-history