It doesn't get much better than this unless you are one of the workers, that is. Gondang Baru was the most antiquated of Java's many sugar mills and much of the equipment shown was 100 years old, particularly the larger stationary steam engines.
For another Java steam powered sugar mill with steam locomotives check out    • Sweet Spot  Olean Sugar Mill, East J...  
If you think these guys have it tough then check out this video of a steam hammer at work in Howrah, India:    • Howrah Steam Hammer, West Bengal, Ind...  
This was filmed around 2006 and after some years of suspended operation, I believe it was officially closed around 2016 and is officially a museum although I have no recent information.
For more technical information on the processes please visit https://www.internationalsteam.co.uk/...
For other videos of steam locomotives here please visit:
https://www.internationalsteam.co.uk/...
4000 pictures of 500 narrow gauge steam locomotives in nearly 50 sugar mills.
Sweet Dreams, Java Sugar Steam 1975 2010 please visit
https://www.internationalsteam.co.uk/...