It seems when using pyanadon's, placing on tin ore (Or any ore where you can place regular fluid miners), with sparse + Nexelit Pole results in the pole overwriting the miners:

See: https://imgur.com/a/9ziS2us

The pole is directly on top of the miner, so once the pole get's placed the miner ghost is cleared.

You should probably use the Blueprints layout with a custom bp designed with the fluid miners + nexelit poles.
There should be other discussion topics with images for that.
...or as last resort use the no-poles option and manually place some poles...

(I'm rewriting a lot of stuff including power pole placement for 1.7 so can't really put out a quick patch)

I ended up using the previous power poles and that worked fine. No problem for now, just wanted you to be aware

Edit: Actually they were messed up too. I used regular instead of sparse and it worked.