Alaska. Rotary snow plow boring through snow bank to clear way for supply train

Photograph shows snowslide covering railroad tracks being blown away; snow being removed by snow plow on the other side of huge snow bank.
No. 38241 RU.
A snowslide in Alaska showing a rotary snow plow boring its way through a huge bank of snow to permit the passage of a train bearing supplies for U. S. Army Air Force Service airplanes on their flight round the world. The daring pilots are just now leaving Seattle for Alaska on the long and hazardous attempt to circumnavigate the globe by air.