They were put to work in harsh conditions in the fields.
I don’t think this has all of the info to answer this question

Pushpalal (Mid-Hill) Highway (H18) (Nepali: पुष्पलाल (मध्य-पहाडी) लोकमार्ग (रा.१८)) is an ongoing road project in Nepal, which is thought to be 1,776 kilometres (1,104 mi) long. After completion, it will be the longest national highway of Nepal. Nepal has three geographical regions from east to west, plain land or Terai in south, higher mountains or Himalayas in north and hills in middle region. The highway runs through the mid-hills region only. It starts from easternmost hill at Chiyabhanjyang of Panchthar District (Province No. 1) and ends at westernmost hill at Jhulaghat of Baitadi District in far west (Sudurpashchim Pradesh)
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In David P. Bradley’s “Indian Country: The Art of David Bradley’, the objects that show the relationship between modernity and tradition are the airplanes versus clouds. Indian Country: The Art of David Bradley can be seen at the Museum of Indian Arts and Culture from Feb. 15, 2015 until January 16, 2016.