Mining Ore with Ziplex Z1 Seeker at the Desert on Arkadia

Hunting seems to be bugged now. At least you get a lot of Failed messages. Good time to skill in mining. I am noob miner and never got any luck on Calypso, but on Arkadia I found few IX claims with the TT finder and my TT return is usualy around 100% and some of the stones I find has decent MU and it seems more profitable for me than hunting.
I got some really nice TT finder. It gains 0.1 tier for every 10 drops. I tiered it to level 1 just with 1 mining run. And until level 8 all tier rates are with 3 digits. Soon I will have tier 8 finder. This run I did in the desert on Arkadia. With 100 drops I have to cross big distance. I haven't maxed the Excavator so I expect my TT return to get even better when I get some skills.
Soon after that mining run I got my first mining global ever. It was in the desert on Arkadia. I got 287 PED of Lysterium Stone. Level XVI claim.

Mining details:
Date: 31 of May 2011
Duration:
VU: 11.10.3
Place: Planet Arkadia, The Desert
Land Tax: 0% Hunting; 0% Mining
Resource type: Ore
Professions:
Prospector: 1
Miner: 1
Equipment:
Finder: Ziplex Z1 Seeker; MAXED; Range: 54; Depth: 204; Durability: Very Good
Extractor: Earth Excavator ME/01; NOT MAXED; Efficiency: 6.8
Loot TT Value: 78.33 PED
Lysterium Stone: 41.91 PED
Ospra Stones: 10.26 PED (133% MU)
Zulax Stones: 5.20 PED
Yulerium Stones: 1 PED
Megan Stone: 5.40 PED
Telfium Stones: 4.62 PED
Copper Stone: 7.84 PED
Veda Stones: 2.10 PED

Mining cost:
Ammo: 100 PED
Drops: 100
Claims: 32 (Hitrate: 32%)
Ziplex Z1 Seeker decay: 0.76 PED
Earth Excavator ME/01 decay: 0.96 PED
Total expenses: 101.72 PED
Loot - Total Expenses = 78.33 - 101.72 = -23.39 PED (77.01% TT return)
(Formula: retturn in % = (loot/total expenses)*100)