# What is the new ore refining formula for Athanor and Tatara citadels?

**URL:** <https://forums.eveonline.com/t/what-is-the-new-ore-refining-formula-for-athanor-and-tatara-citadels/38090>\
**Category:** Science & Industry\
**Created:** [November 11, 2017, 1:49pm UTC](https://forums.eveonline.com/t/what-is-the-new-ore-refining-formula-for-athanor-and-tatara-citadels/38090 "2017-11-11T13:49:14Z")\
**Posts on this page:** 1\
**Showing post:** 25

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**Author:** ![ISD\_Sakimura](https://sea1.discourse-cdn.com/eveonline/user_avatar/forums.eveonline.com/isd_sakimura/32/382213_2.png) [@ISD\_Sakimura](https://forums.eveonline.com/u/ISD_Sakimura)\
**Post date:** [November 13, 2017, 6:06pm UTC](https://forums.eveonline.com/t/what-is-the-new-ore-refining-formula-for-athanor-and-tatara-citadels/38090/25 "2017-11-13T18:06:43Z")

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For confirmation I decided to put up a Tatara in Highsec on SISI to test out the Reprocessing Yields, and here are my finding:

# Refinery Reprocessing Formula:

* * *

**BY** = Base Yield  
**RM** = Rig Modifier || Tech1 is 1 == 1% and Tech2 is 3 == 3%.  
**StM** = Structure Modifier || Athanor is 0.02 == 2%, Tatara is 0.04 == 4%.  
**SeM** = Security Modifier || Lowsec is 0.06 == 6%, Null/WH space is 0.12 == 12%  
**R** = Reprocessing Skill level  
**RE** = Reprocessing Efficiency level  
**OP** = _Specific_ Ore Processing Skill level  
**IM** = Implant, which comes in 1%, 2% and 4% or 0.01, 0.02 and 0.04 respectively

* * *

- **Base Yield** = **BY** = (50 + **RM** ) \* (1 + **StM** ) \* (1 + **SeM** )

- **Character Processing yield Formula:**  **BY** \* (1 + (0.03 \* **R** )) \* (1 + (0.02 \* **RE** )) \* (1 + (0.02 \* **OP** )) \* (1 + **IM** )

**NOTE:** Security Modifier **only** apply if Rig is installed

I hope this makes sense to my fellow capsuleers, just for good measure I will give a few screenshots as documentation (Left: HS Tatara with no Rig, Right: HS Tatara with T2 Rig):

![Tatara with No Rig](https://global.discourse-cdn.com/eveonline/original/3X/a/9/a942d7900e7b2182968373cc9f43ebb0b7054311.png) ![Tatara with T2 Rig](https://global.discourse-cdn.com/eveonline/original/3X/a/1/a15d4b623d51135dfdeff530bef803c8c7c6571c.png)

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