# Division Order - What is a NOX interest?
**URL:** https://www.mineralrightsforum.com/t/division-order-what-is-a-nox-interest/79974
**Category:** Division Orders
**Created:** [February 18, 2025, 9:51pm UTC](https://www.mineralrightsforum.com/t/division-order-what-is-a-nox-interest/79974 "2025-02-18T21:51:04Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@rmartin88](https://www.mineralrightsforum.com/u/rmartin88)
#### Post date: [February 18, 2025, 9:51pm UTC](https://www.mineralrightsforum.com/t/division-order-what-is-a-nox-interest/79974/1 "2025-02-18T21:51:04Z")
Hello - I’ve been assisting a friend with reading and understanding his division orders. There are multiple lines of interest including royalty and NPRI. However, there is a third type that I’ve never heard of before. Does anyone know what a NOX1 interest is and if it is calculated differently? Thank you!
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### Author:  [@M\_Barnes](https://www.mineralrightsforum.com/u/M_Barnes)
#### Post date: [February 19, 2025, 2:16pm UTC](https://www.mineralrightsforum.com/t/division-order-what-is-a-nox-interest/79974/2 "2025-02-19T14:16:37Z")
There should be a legend somewhere on the statement. NOX can be shorthand for nitric oxide (NO) and nitrogen dioxide (NO2). They are generally considered pollutants. You can contact the Division Order analyst and ask how they are using the term.
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### Author:  [@system](https://www.mineralrightsforum.com/u/system)
#### Post date: [May 19, 2025, 9:51pm UTC](https://www.mineralrightsforum.com/t/division-order-what-is-a-nox-interest/79974/3 "2025-05-19T21:51:20Z")
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