# Relationship history for MSHA mine 4202074

Current hierarchy: **Alexander  Walker III → Hidden Splendor Resources Inc → Horizon 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:** Blue Blaze Coal Company → Horizon Mine; 1992-04-01 to 1995-04-19; source msha-controller-operator-history
- **controller_controls_mine:** William R  Skaggs → Horizon Mine; 1992-04-01 to 1995-04-19; source msha-controller-operator-history
- **controller_controls_operator:** William R  Skaggs → Blue Blaze Coal Company; 1992-04-01 to 1995-04-19; source msha-controller-operator-history
- **operator_operates_mine:** Horizon Coal Corp → Horizon Mine; 1995-04-20 to 1997-07-10; source msha-controller-operator-history
- **controller_controls_mine:** Cumberland Resources Corporation → Horizon Mine; 1995-04-20 to 1997-07-10; source msha-controller-operator-history
- **controller_controls_operator:** Cumberland Resources Corporation → Horizon Coal Corp; 1995-04-20 to 1997-07-10; source msha-controller-operator-history
- **controller_controls_mine:** Iracoal Incorporated → Horizon Mine; 1997-01-31 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Horizon Coal Corp → Horizon Mine; 1997-07-11 to 1997-08-28; source msha-controller-operator-history
- **controller_controls_mine:** Scott  Kiscaden et al → Horizon Mine; 1997-07-11 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Scott  Kiscaden et al → Horizon Coal Corp; 1997-07-11 to 1997-08-28; source msha-controller-operator-history
- **controller_controls_operator:** (Donald) Todd  Kiscaden et al → Horizon Coal Corp; 1997-07-11 to 1997-08-28; source msha-controller-operator-history
- **operator_operates_mine:** Horizon Mining Llc → Horizon Mine; 1997-08-29 to 1999-07-14; source msha-controller-operator-history
- **controller_controls_mine:** Horizon Coal Corporation et al → Horizon Mine; 1997-08-29 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Horizon Coal Corporation et al → Horizon Mining Llc; 1997-08-29 to 1999-07-14; source msha-controller-operator-history
- **controller_controls_operator:** Tokyo Boeki (USA) Inc et al → Horizon Mining Llc; 1997-08-29 to 1999-07-14; source msha-controller-operator-history
- **operator_operates_mine:** Lodestar Energy, Inc → Horizon Mine; 1999-07-15 to 2003-03-23; source msha-controller-operator-history
- **controller_controls_operator:** Iracoal Incorporated → Lodestar Energy, Inc; 1999-07-15 to 2003-03-23; source msha-controller-operator-history
- **operator_operates_mine:** Hidden Splendor Resources Inc → Horizon Mine; 2003-03-24 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** America West Resources, Inc. → Horizon Mine; 2003-03-24 to 2013-06-30; source msha-controller-operator-history
- **controller_controls_operator:** America West Resources, Inc. → Hidden Splendor Resources Inc; 2003-03-24 to 2013-06-30; source msha-controller-operator-history
- **controller_controls_mine:** Alexander  Walker III → Horizon Mine; 2013-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Alexander  Walker III → Hidden Splendor Resources Inc; 2013-07-01 to current/open; source msha-controller-operator-history