---
title: "Liberty Star Minerals expands Tombstone district to 45 sq mi with 13 new exploration claims"
type: "News"
locale: "en"
url: "https://longbridge.com/en/news/283517630.md"
description: "Liberty Star Minerals has expanded its Tombstone Mining District by staking 13 new mineral exploration permits, increasing its total area to approximately 45 square miles. This consolidation includes the Earp Ridge Mines and Red Rock Mines, enhancing the company's potential to attract mining partners and advance exploration efforts. The expansion is supported by previous mapping, rock sampling, and IP surveys, with ongoing assays and geophysics planned."
datetime: "2026-04-21T14:13:01.000Z"
locales:
  - [zh-CN](https://longbridge.com/zh-CN/news/283517630.md)
  - [en](https://longbridge.com/en/news/283517630.md)
  - [zh-HK](https://longbridge.com/zh-HK/news/283517630.md)
---

# Liberty Star Minerals expands Tombstone district to 45 sq mi with 13 new exploration claims

**Liberty Star Minerals announced staking 13 additional mineral exploration permits, expanding its consolidated Tombstone Mining District footprint to ~45 square miles.**

**Key Highlights:**

-   Staked 13 new mineral exploration permits covering ~11 square miles, raising total footprint to ~45 square miles.
-   Completes district-scale consolidation in the Tombstone Mining District, protecting targets identified by mapping, rock sampling and IP surveys.
-   Consolidated position includes Earp Ridge Mines (multi-mineral, copper, molybdenum) and Red Rock Mines (gold target).
-   Company says the scale and location improve prospects to attract a mining partner and advance exploration as assays and geophysics proceed.

Original SEC Filing: LIBERTY STAR URANIUM & METALS CORP. \[ LBSR \] - 8-K - Apr. 21, 2026

**Disclaimer**

This is an AI-powered summary. It may contain inaccuracies. Consider verifying important information with the source. Please note this summary is solely based on documents filed with the SEC.

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