The two refineries aren't bad, tho with various ships in the game now I'd highly advise *against* using the refineries anymore.
They are capped at 75% max and give a 200,000m3 limit of a single ore type. So yes crimson ark and regular ark can't go in the same array. On top of that they take 3 HOURS to finish a single load, so unless your corp has a 23/7 crew your quickly going to overfill your corp hangers and be swimming in ore.
5 hulks and even minor mining bonuses can fill a corp hanger quite quickly. There are smaller arrays that can refine 25,000m3 in an hour, but your getting 1/8th the capacity for 1/3rd the time. Not a good trade off.
However, then comes the Rorqual.
Yes, skill intensive. BUT she'll make your life a heck of a lot easier if your in 0.0 space.
First off it can compress the ore, and on ABC ores it gives 20 to 1 compression. So a 200,000m3 load becomes a 10,000m3 'block'. The rorqual itself comes with a cargohold of around 135,000m3. So moving vast amounts of ore back to a refinery outpost becomes a lot easier.
The other option is for the Rorqual to simply compress all your ore for you and refine it that way if for some reason you don't have access to a refinery outpost. Tho in that case I'd just suggest you make a few extra jumps back and forth and put it in a low sec station for refinement.
The rorqual with the proper bonuses can also give your team the maxium mining bonuses a gang can get. So not only will you get it faster, but you'll be getting more.
But back to the refinery array, the refinery arrays do give 100% return on Ice blocks. So if your mining large amounts of it and want higher return then maybe your alliances refinery is capable of the refinery can return all of it to you at 0% loss.
The problem however becomes that the ice products quickly get bulky if you mine with a fleet of mackinaws. You can make a very good return on ice products so if your nearby a ice belt, have a refinery array and want to mine alot. Mine ice, transport to your local outpost/station and watch the sales pile up.
Everything in Ice is needed more and more these days. Stront for capitals, and towers. Heavy Water for POS's and Rorquals. Liquid Ozone for Jump bridges, Cyno's and POS's and lastly topes for POS's and various capitals.
Unless your part of an alliance that is lacking a capital fleet, everything you mine up ice wise will sell quite quickly in your alliance outposts. Just put it at Jita sell prices, make a post on your alliance forums and watch the money flow in.
Getting 100% return on that ice will only help your profits by using that array, and your alliance mates will love you since ppl HATE mining ice usually.
Don't use the refineries for Ore, but use it for Ice.
