In a race against time, rescue operations for 41 construction workers trapped in a tunnel in the Uttarakhand have taken a unique turn. Facing challenges with machinery, rescuers introduced “rat miners” to manually drill through a narrow pipe in a bid to expedite the evacuation process. The workers have been stranded since November 12 when a section of the under-construction highway tunnel collapsed, possibly due to a landslide.
RAT MINERS: A MANUAL APPROACH TO RESCUE
Rat-hole mining, traditionally used in coal mining in India, involves manually excavating deep tunnels through narrow passages. In this case, a team of six specialists, referred to as “rat miners,” will enter the existing two-and-a-half-foot pipe thrust into the debris pile. Armed with hand tools, these experienced miners will manually remove rocks and soil, reviving a crude yet effective method used in coal mining.
UNDERSTANDING RAT-HOLE MINERS
Rat-hole mining is a practice where miners, often equipped with pickaxes, shovels, and baskets, manually dig through narrow passages to extract coal. The method, known for its resemblance to rats burrowing through tight spaces, is commonly used in India to access coal deposits. Miners enter these passages using ropes or bamboo ladders, showcasing their expertise in navigating through challenging environments.
CHALLENGES FACED AND INITIAL RESCUE EFFORTS
The initial collapse prompted the deployment of a small pipe, providing essential supplies like oxygen, food, and medicine to the trapped workers. Last week, a slightly wider pipe was successfully inserted through the debris, enabling the delivery of hot meals and the use of a medical endoscopic camera to assess the workers’ condition.
INNOVATIVE DUAL STRATEGIES UNVEILED
With conventional methods proving challenging, rescuers opted for two simultaneous strategies. The first involves vertical drilling from the top of the hill above the tunnel. This intricate process requires drilling over 280 feet straight down, expected to take at least four days if all goes according to plan. The second strategy involves a manual resumption of horizontal drilling through the debris pile, utilizing the “rat-hole mining” technique.
As the dual rescue strategies unfold, the deployment of rat miners adds a human touch to the mission, leveraging their specialized skills to navigate the challenging terrain and expedite the extraction of the trapped workers.