Yes all the files are there for bothe the mines and subnets. The problem is we can not add them to the campaign or single missions due to them not being in the Library for the Mission Editor.
I have got them to show up in the menu Editor but when you try to place them as a unit it causes the Mission Editor to display the following Error:
platform AntiSubNet not found in platforms library!!!
This is also the same error I encountered while working on my Ship Reskin Mod while trying to create new ship types from a stock model.
The New ship type was not present in the library when opening the Editor.
How one adds new objects to the Lidrary, that I don't know, but this may hold the solution to Mines and Subnets.