Raisebor Celebrates 50 Years in Shaft Sinking Innovation

Have you ever gazed into the profound depths beneath our feet, wondering how those massive mines and tunnels are precisely excavated? In the vast realm of underground engineering, one company has set unparalleled industry standards through nearly five decades of specialized expertise. That company is RAISEBOR.

The Foundation and Pioneer of American Underground Engineering

RAISEBOR, the oldest and largest shaft-sinking contractor in the United States, has left an indelible mark on American underground engineering through its technical excellence and rigorous safety protocols. This 100% American-owned enterprise has demonstrated what true professionalism and perseverance mean over its 50-year history.

The company maintains an extraordinary safety record: {day} days, {hour} hours, {min} minutes, and {sec} seconds of continuous operation without a single time-lost incident. This achievement represents more than just numbers—it embodies RAISEBOR's solemn commitment to life preservation and project quality. In an industry fraught with uncertainties, safety isn't just a priority—it's the cornerstone of RAISEBOR's existence and growth.

Technical Mastery: Advanced Equipment and Innovation

RAISEBOR's success stems from continuous investment in cutting-edge technology and equipment optimization. The company maintains the industry's most sophisticated machinery portfolio, capable of handling diverse geological challenges.

Atlas Copco 123RH: The Colossal Excavation Powerhouse

As America's most powerful shaft-boring machine, the Atlas Copco 123RH serves as RAISEBOR's primary tool for large-scale projects. It effortlessly handles shafts up to 20 feet in diameter and 3,000 feet deep, with capacity for even wider diameters at shallower depths. Its advanced hydraulic system and efficient drill bit design maximize productivity while minimizing rock disturbance.

Robbins 83RM: The Reliable Workhorse

This industry leader handles shafts up to 20 feet in diameter and 2,000 feet deep, offering cost-effective solutions for mid-to-large scale projects. Its operational stability makes it ideal for long-term engagements.

Specialized Solutions for Every Scale

From the Ingersoll-Rand RBM7-SP-LH for mid-range projects (10-16 foot diameters, 800 foot depths) to the Robbins 61R and 41R for smaller ventilation and exploration shafts, RAISEBOR's equipment portfolio demonstrates comprehensive capability across all project scales.

Project Portfolio: A Legacy Carved in Stone

RAISEBOR's project history reads like a chronicle of underground engineering achievements:

• 16-foot diameter, 800-foot deep limestone mine shaft in Virginia
• 20-foot diameter, 1,800-foot deep metallurgical coal mine in Alabama
• 18-foot diameter, 1,300-foot long coal mine shaft in West Virginia
• Successful 16.5-foot diameter reamer retrieval in Atlanta's water storage project

The company's record includes extraordinary feats like a 6-foot diameter shaft reaching 2,250 feet deep, and a massive 26-foot diameter shaft extending 1,450 feet underground.

Comprehensive Services: Turnkey Excellence

RAISEBOR delivers complete underground solutions—from surface to subsurface, drilling to final structural lining—without requiring client or third-party assistance. This integrated approach offers:

• Enhanced project efficiency through unified management
• Reduced coordination costs with single-point responsibility
• Guaranteed quality consistency across all project phases
• Optimized resource allocation and risk management

Industry Recognition: Media Spotlight and World Records

RAISEBOR's achievements have drawn attention from leading industry publications including Coal People, Coal Age, and Mining & Construction magazines. Notably, a 2014 project involving a 26-foot diameter, 1,440-foot deep shaft was reported as potentially setting a world record for shaft boring.

Future Vision: Innovation Underground

As an industry pioneer, RAISEBOR continues to invest in research and development, exploring more efficient, environmentally sustainable, and safer excavation technologies. The company remains committed to customized solutions for every unique underground challenge.

Through fifty years of experience, RAISEBOR has written an extraordinary chapter in underground engineering history, contributing significantly to global subsurface development. From deep mines to complex tunnels, from water projects to critical infrastructure, RAISEBOR's legacy continues to grow—one shaft at a time.