# 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:** 10

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**Author:** ![Mai\_Stormheart](https://sea1.discourse-cdn.com/eveonline/user_avatar/forums.eveonline.com/mai_stormheart/32/266424_2.png) [@Mai\_Stormheart](https://forums.eveonline.com/u/Mai_Stormheart)\
**Post date:** [November 12, 2017, 1:00pm UTC](https://forums.eveonline.com/t/what-is-the-new-ore-refining-formula-for-athanor-and-tatara-citadels/38090/10 "2017-11-12T13:00:49Z")

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To confirm the formula would be:

((1 + (Structure Bonus / 100)) \* (Refining Yield Multiplier) \* (1 + (Refining Skill Level \* 0.03)) \* (1 + (Reprocessing Efficiency Skill Level \* 0.02)) \* (1 + ( Ore/Ice Specific Processing Skill Level \* 0.02)) \* (1 + (Processing Implant Percentage / 100)) \* Security Modifier)

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