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We allow both headphones and earbuds for the purpose of noise cancellation. We have strong advocates for hearing protection in our group, and OSHA-accepted levels are one thing, but they don't address fatigue from the constant 70-75 dB hum of the lab.</div>
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Straight from our Lab Manual:</div>
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The background noise levels in labs are well within OSHA limits for 8 hours of continuous exposure. However, many staff and labmembers find it more comfortable to work using noise cancelling headphones or ear buds. Disposable foam ear plugs are provided for
lab use. While hearing protection is highly encouraged, please make sure you are still able to hear alarms and other people in the lab (do not use headphones for entertainment.)</div>
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...</div>
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Carsen</div>
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<p style="margin-top: 1em; margin-bottom: 1em;"><span style="font-family: Arial, Helvetica, sans-serif;">Carsen Kline</span><br>
<span style="font-family: Arial, Helvetica, sans-serif;">Lab Operations Manager</span><br>
<span style="font-family: Arial, Helvetica, sans-serif;">Stanford Nanofabrication Facility</span><br>
<span style="font-family: Arial, Helvetica, sans-serif;">(650)724-8214</span><br>
<span style="font-family: Arial, Helvetica, sans-serif;"><a href="http://snf.stanford.edu/" style="margin-top: 0px; margin-bottom: 0px;">https://snf.stanford.edu</a></span></p>
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<b>From:</b> labnetwork <labnetwork-bounces@mtl.mit.edu> on behalf of Michael Helmbrecht <mhelmbrecht@berkeley.edu><br>
<b>Sent:</b> Wednesday, July 8, 2026 8:44 AM<br>
<b>To:</b> Jacob T. Trevino <jt2900@columbia.edu><br>
<b>Cc:</b> Network Fab <labnetwork@mtl.mit.edu><br>
<b>Subject:</b> Re: [labnetwork] [BULK] [EXTERNAL] earbud/earphone use in facility/cleanroom</div>
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Hi all, No headphones, earbuds allowed in our lab. We have also had a recent experience where a lab member did not hear a toxic gas alarm. We are also concerned by distractions and general lack of awareness. We do not allow phone use or conference</div>
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<div style="direction: ltr;">Hi all,</div>
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<div style="direction: ltr;">No headphones, earbuds allowed in our lab. We have also had a recent experience where a lab member did not hear a toxic gas alarm. </div>
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<div style="direction: ltr;">We are also concerned by distractions and general lack of awareness. We do not allow phone use or conference calls around the equipment. (Exceptions for a conference call to repair a piece of equipment or for remote teamwork related
to the tool.) </div>
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<div style="direction: ltr;">One ear bud or bone-conduction seams like a decent compromise.</div>
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<div style="direction: ltr;">Best,</div>
<div style="direction: ltr;">Michael</div>
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<div style="direction: ltr;">------------------------------------------------------------------------------------------</div>
<div style="direction: ltr;">Michael Helmbrecht, Ph.D.</div>
<div style="direction: ltr;">Executive Director</div>
<div style="direction: ltr;">Berkeley Marvell Nanofabrication Laboratory</div>
<div style="direction: ltr;">520 Sutardja Dai Hall</div>
<div style="direction: ltr;">Berkeley, CA 94720</div>
<div style="direction: ltr;">(510) 809-8620</div>
<div style="direction: ltr;"><a href="https://urldefense.com/v3/__https://nanolab.berkeley.edu/__;!!G92We9drHetJ8EofZw!YDh4qQfbklF7PJQYDzU7gQITEUvVE-cZFgEnuRYWwyH950LBIfleQG4dtSJgBel56y2e_u4siFBONO0mSIhMCw0G6rA$" id="OWA2081af8b-92ce-61d9-1380-635e0c595de6" class="OWAAutoLink" data-auth="NotApplicable">https://nanolab.berkeley.edu/</a></div>
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<div style="direction: ltr;">On Wed, Jul 8, 2026 at 7:58 AM Jacob T. Trevino <<a href="mailto:jt2900@columbia.edu" id="OWA3e6428cc-d0bc-15b4-4b26-846a4f8f0f29" class="OWAAutoLink">jt2900@columbia.edu</a>> wrote:</div>
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<div style="direction: ltr;">Hi All,</div>
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<div style="direction: ltr;">We allow in-ear headphones (no over-ear headphones), but ask them to only wear one so that they can still hear the environment around them. </div>
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<div style="direction: ltr;">Best,</div>
<div style="direction: ltr;">Jacob</div>
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<div style="direction: ltr;">-------------------------------------<br>
<b>Jacob Trevino, PhD</b><br>
Senior Director, Columbia Nano Initiative Labs<br>
Columbia University<br>
530 W120th Street, Room 1015/MC 8903</div>
<div style="direction: ltr;">New York, NY 10027<br>
Email:<a href="mailto:jt2900@columbia.edu" id="OWA11200080-a98d-c793-32ef-49791b024cbb" class="OWAAutoLink"> jt2900@columbia.edu</a><br>
Cell: 734-787-2171</div>
<div style="direction: ltr;">Desk: 212-854-9927</div>
<div style="direction: ltr;"><a href="https://urldefense.com/v3/__https://cni.columbia.edu/__;!!G92We9drHetJ8EofZw!YDh4qQfbklF7PJQYDzU7gQITEUvVE-cZFgEnuRYWwyH950LBIfleQG4dtSJgBel56y2e_u4siFBONO0mSIhMibV5sTQ$" id="OWA34486fea-a8fd-4c7d-d313-d987f7499846" class="OWAAutoLink" data-auth="NotApplicable">https://cni.columbia.edu/</a></div>
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<div><br>
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<div style="direction: ltr;">On Wed, Jul 8, 2026 at 7:52 AM Ahad Syed <<a href="mailto:ahad.syed@kaust.edu.sa" id="OWA393cdf91-ef59-0533-2bf1-da1c67acbe0d" class="OWAAutoLink">ahad.syed@kaust.edu.sa</a>> wrote:</div>
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Hello Fubo, About 18 months ago, we had an incident where a user didn't hear the fire alarm because they were wearing noise-cancelling earbuds. They were so focused on their work (and music) that they didn't notice either the audible alarm or</div>
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Hello Fubo,</div>
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About 18 months ago, we had an incident where a user didn't hear the fire alarm because they were wearing noise-cancelling earbuds. They were so focused on their work (and music) that they didn't notice either the audible alarm or the flashing lights.</div>
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Following that incident, we decided to ban all types of headphones and earbuds in the Cleanroom.</div>
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All the best,</div>
<div style="direction: ltr; font-family: Verdana, Geneva, sans-serif; font-size: 10pt; color: rgb(0, 0, 0);">
Ahad</div>
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<span style="background-color: rgb(255, 255, 255);">-- </span></div>
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Nanofabrication Core Lab</div>
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4700 King Abdullah University of Science and Technology<br>
0253 Building 3, Thuwal 23955-6900, Kingdom of Saudi Arabia<br>
Tel:+966 12 808 2348</div>
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The Core Labs</a></div>
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<b>From:</b> labnetwork <<a href="mailto:labnetwork-bounces@mtl.mit.edu" id="OWA432c728e-0e45-df23-9e15-b4c68964ae80" class="OWAAutoLink">labnetwork-bounces@mtl.mit.edu</a>> on behalf of Fubo Rao <<a href="mailto:furao@ucsd.edu" id="OWAa3369ccd-cb7f-d465-aff5-8e8069a36878" class="OWAAutoLink">furao@ucsd.edu</a>><br>
<b>Sent:</b> Tuesday, July 7, 2026 9:12 PM<br>
<b>To:</b> Network Fab <<a href="mailto:labnetwork@mtl.mit.edu" id="OWAe8136489-f4f2-c69b-3462-758c2c2ca8de" class="OWAAutoLink">labnetwork@mtl.mit.edu</a>><br>
<b>Subject:</b> [BULK] [EXTERNAL] [labnetwork] earbud/earphone use in facility/cleanroom</div>
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<span style="letter-spacing: revert; background-color: revert; line-height: revert;">You don't often get email from
<a href="mailto:furao@ucsd.edu" id="OWA095b8559-e60a-386b-c916-5c78627db787" class="OWAAutoLink">
furao@ucsd.edu</a>. <a href="https://urldefense.com/v3/__https://aka.ms/LearnAboutSenderIdentification__;!!BDUfV1Et5lrpZQ!XcspatWnmlX5QlURslhz7XM6boLnvoa_UREt7RAFO0rbS7bHHTW9zNgFjx6SJV1F8agHGNcK2I09BcXUCctQEIHkCj6J$" id="OWAeb649090-bc32-c31d-7277-eafc36e1d08f" class="OWAAutoLink" style="color: revert; display: revert; background-color: revert;" data-auth="NotApplicable">
Learn why this is important</a></span></div>
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<div style="direction: ltr;">Dear Colleagues,</div>
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<div style="direction: ltr;">Do you ban, regulate, or allow your users to wear earbuds or earphones in your facility, especially in the Cleanroom?</div>
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Thanks,</div>
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Fubo Rao, Ph.D.,</div>
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Nano3 Technical Director,</div>
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Qualcomm Institute/Atkinson Hall,</div>
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UC San Diego<br>
9500 Gilman Drive #0436<br>
La Jolla, CA 92093-0436</div>
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Tel. (858)534-4518</div>
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Cell: (858)375-9190</div>
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E-mail: <span style="color: rgb(17, 85, 204);"><a href="mailto:furao@ucsd.edu" id="OWAf5b6511a-d4d3-a57f-a272-a143f41f304d" class="OWAAutoLink" style="color: rgb(17, 85, 204);">furao@ucsd.edu</a></span></div>
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