it seems like it doesn't work, does nothing, ores around the Maw are not being sucked in at Tier 3
Viewing post in The Insatiable Guzzler! comments
Yup, it was a bug, just released a hotfix: https://greenwizardgames.itch.io/dwarf-eats-mountain/devlog/1113403/hotfix-for-t...
Thanks for reporting!