# Little "bumps" on the bottom of a Sierra Nevada bottle

**URL:** <https://boards.straightdope.com/t/little-bumps-on-the-bottom-of-a-sierra-nevada-bottle/330251>\
**Category:** Factual Questions\
**Created:** [November 9, 2005, 6:46pm UTC](https://boards.straightdope.com/t/little-bumps-on-the-bottom-of-a-sierra-nevada-bottle/330251 "2005-11-09T18:46:44Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Squee](https://avatars.discourse-cdn.com/v4/letter/s/ba9def/32.png) [@Squee](https://boards.straightdope.com/u/Squee)\
**Post date:** [November 9, 2005, 6:46pm UTC](https://boards.straightdope.com/t/little-bumps-on-the-bottom-of-a-sierra-nevada-bottle/330251/1 "2005-11-09T18:46:44Z")

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Hivemind,

I was taking out the recycling this morning and I picked up on of the Sierra Nevada Summerfest beer bottles and noticed a series of little “bumps” along the bottom of one side of the bottle looking like: “. . … . . . .” with on the opposite side of the bottle the code “N22 O1(? illegible) 05 T-8” . Dunno why I never noticed this until today… been drinking SN for about 15 years.

Anyway, I’m not so much interested in the legible code, as it probably has to do with the date and plant information.

Does anyone know what the “bumps” mean? Or does it mean nothing and just part of the bottle making process?

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**Author:** ![Squink](https://avatars.discourse-cdn.com/v4/letter/s/b5e925/32.png) [@Squink](https://boards.straightdope.com/u/Squink)\
**Post date:** [November 9, 2005, 7:10pm UTC](https://boards.straightdope.com/t/little-bumps-on-the-bottom-of-a-sierra-nevada-bottle/330251/2 "2005-11-09T19:10:15Z")

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Mold codes: [Row of little bumps on bottom of glass bottles/jars](http://boards.straightdope.com/sdmb/showthread.php?t=317420)

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<div class="post-metadata">

**Author:** ![Squee](https://avatars.discourse-cdn.com/v4/letter/s/ba9def/32.png) [@Squee](https://boards.straightdope.com/u/Squee)\
**Post date:** [November 9, 2005, 7:21pm UTC](https://boards.straightdope.com/t/little-bumps-on-the-bottom-of-a-sierra-nevada-bottle/330251/3 "2005-11-09T19:21:50Z")

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Thanks, Squink… damn, I don’t open threads often, but when I do they seem to have been answered already. My bad for not doing a search first.

Thank you, and my roommate thanks you too! = )