NPC mining fleet changes in 2020? And some questions

[Razmite_X]

I am referring to this post from 2018:

Blowing Up the NPC miners

Hy, one of my current main activities is killing NPC haulers, so I guess I can answer most of your questions. First, you asked for the loot. If you kill an hauler, they normally drop a stronghold box (of the specific mining corp) with a chance of ~90%. The wreck can also contain ore with a chance of ~50%. The ore drop differes extremely. It can be a few thousend m³ or a really huge ammount. The biggest ore drop I got from a single hauler was 180.000m³ (normally its ~ 40k). The boxes always con…

I think they cahnged a bit on that, can anyone confirm or deny that?

From the last 40-50 Haulers i killed, i think the loot drop rate changed quite sigifitely ( or loot fairy hates me )

T1 haulers seem to have below 50% chance of a box drop - for me about 20-30%
T2 haulers still have about 90% chance of a box drop.
This seems to be the same for empire and pirate factions.

I have a few question and hope to get an answer here:

How long does it take for a pirate npc mining fleet to despawn and spawn a new fleet after killing the hauler?

in this thread someone stated that it takes 90min from spawn to first hauler arrive and then 30 min intervals:

NPC mining fleets standings

Well in depth guide will take a while to record/write, but generally yes - when hauler spawns (t1 or t2, its called impel, badger, mammoth and so on) it means that miners are approaching full cargo. its 5k for ventures 10k for retri and 10k for skiffs. First hauler spawns after 90mins of fleet spawn and then are locked in 30 mins intervals (even if the ships are 100% full before that timer hauler wont spawn). And here is a clip i recorded couple years ago, just testing things out and its not …

@Vaako_Molinari

First hauler spawns after 90mins of fleet spawn and then are locked in 30 mins intervals (even if the ships are 100% full before that timer hauler wont spawn).

Is this still the case? to me it seems less often now

[Razmite_X]

Additional question:
Is there any way to find out how long it takes till the next hauler arrives?
I tried cargo scanning the miners but the scan showed empty cargo