[Systems]Frankfurt mining field

[MasterL410]

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Type: Systems
Bug: Aluminium mining field has two types of rock + drops are low
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In the new Aluminium mining field, there are two types of rocks present, the ones from the normal asteroid field before, which will not drop you any ore when shot, and the normal mining rocks. I'm not sure if this is intentional, but it is annoying and confusing at least.

I have also noticed that the ore drops are very small (2-5 units on average, 11 at a shot was the best I could get while mining 8000 units).
I'm using a DHC ID/IFFed Surveyor with full mining lasers, not sure if the DHC ID's mining bonus was nerfed or if it's the field, please let me know.

Thank you for your time.