Defuser is it worth it?

[091846]

my idea to improve yours the area of 300 is ok then you can upgrade it to 500 aoe , then 700 for that item , if you want 1k = by the time you upgrade to 0.7k miners have optian to keep mining or change a new plan , i think 300 to 500 is enough , 700 aoe , i think need to combine with instant repair it is whn you use it , it can scan and heal at the same time