Katra: Shri Mata Vaishno Devi Shrine Board, Katra, has found a novel solution to the problem of waste generated by mules. Over 40 tonnes of dung being excreted by mules every day on the 13-km trek stretch en route to the holy cave shrine, causing stink in the area, will now be converted into fuel pellets and replace the liquefied petroleum gas for cooking and heating. The board has come up with the first-ever mule dung-based biogas plant near the town. The plant is currently on trial run and ready to be commissioned.