I saw that you are still using the old stile textures for the icon and technology.
If you are interested in updating them, I tried a bit with the textures and created the following images.
Unfortunately, I couldn't avoid a slight greenish tint to the image, because otherwise there would have been some orange artifacts.
https://postimg.cc/gallery/k4c067x

I think I have found a better solution to the green tint.
https://postimg.cc/gallery/JH6cc3w

I freely grant you a permanent non-revocable license to my linked pictures above.

I forked the original code, made the fixes, and some addition improvements and updated the artwork. You can find it over here: https://mods.factorio.com/mod/explosive_excavation_continued