Hi,
Thanks for trying out my mod. On the information page there is an explenation on how to use it:
A mod that removes the recipy of landfill. If you want to landfill, you can craft land mover (if researched). Dig a hole, and get the land (it will be replaced by water as you dig under the sea level). You'll get landfill in your inventory instead. Now you can replace your digged up land somewhere else!
In other words: Research the tech, then create some "Land Mover". Go to the place you want to dig up land (it will convert the digged up land into water). As a result from that, you'll get some landfill (like how you know it in the vanilla game) into your inventory. You can place that landfill whereever you want. In short, you don't just create land anymore from the vanilla stone, but you move already existing land to somewhere else.
If you have any other/specific questions, feel free to reply.
Kind regards,
lovely_santa