A JCB machine working on the Farkin-Keran road near Farkin Top was hit by the avalanche, a police spokesman said.
The JCB operator, identified as Amerdeep Singh, was critically injured, he said.
Singh was shifted to a medical facility, the spokesman said, adding that two others, Shakoor Ahmad Piswal and Mohammad Sumander Mir, both residents of Farkin, were evacuated safely.