| Author | Comment | Last activity | Moderation | ||
|---|---|---|---|---|---|
| liz | "Thank you for finding this out @Joe! Very helpful. " | Read more » | about 3 years ago | |||
| joyofsoy | "I'd usually agree with you @liz, but I found some more research on the site, and in this case there's a mix of limestone, quartz, and other materia..." | Read more » | about 3 years ago | |||
| liz | "Hi @engineerjaykumar, thanks for offering a thought toward this question. "Frac" sand is a kind of sand used for "hydrofracking," the extraction of..." | Read more » | about 3 years ago | |||
| Engineerjaykumar | "I think this frac sand mine in western Wisconsin want quarry the rocks for the manufacture of cement, because as demand of the cement for concrete ..." | Read more » | about 3 years ago | |||
| annemolony413 | "Thanks for your advice Stevie. anne " | Read more » | about 3 years ago | |||
| annemolony413 | "Thank you for your help kgradow1. Our main problem now is to prove that silica is in the quarry that exists so that we can stop its expansion to s..." | Read more » | about 3 years ago | |||
| stevie | "Hi! Yes good question. Also check out this page: https://publiclab.org/wiki/frac-sand It's related to sand mining, but there would be similar conce..." | Read more » | over 3 years ago | |||
| kgradow1 | "Airborne crystalline silica is a known occupational health hazard and is hazardous in high concentrations. See links below: https://www.silica-sa..." | Read more » | over 3 years ago | |||
| Mark34 | "Last year my friend Lisa recommend me to visit even on the earth like Centerville. Mostly exploring these things on https://networthplanet.com/ " | Read more » | over 3 years ago | |||
| michaelhenry | "Nice post... Here is my site pls visit https://pvacorner.com/youtube-pva-accounts " | Read more » | over 3 years ago | |||
| festival | "nice post for these articles Govt post " | Read more » | over 3 years ago | |||
| xose | "Hi @erumenig sorry for the delay. I've realized this thread remained in stand by. How did it go? Did you manage to build the device? Best! " | Read more » | about 5 years ago | |||
| erumenig | "Firstly, thanks for elucidate my questions. Let me understand just 1 thing more. After purchase the components and to make "DustDuino" I would hav..." | Read more » | over 5 years ago | |||
| warren | "Thanks all! " | Read more » | over 5 years ago | |||
| xose | "Hi erumenig, find the Shinyei PPD42 sensor, core of the dustduino, here https://www.seeedstudio.com/category/Grove-Dust-Sensor-p-1050.html " | Read more » | over 5 years ago | |||
| erumenig | "Warren and Willie, hello! I would like to thank you for these informations. I heard about them. I'll try to contact the Garoa. Thank you again. " | Read more » | over 5 years ago | |||
| willie | "Hi @erumenig we used mostly off the shelf components to build the dustduino kit. The only really unique piece was the acrylic case. We worked with ..." | Read more » | over 5 years ago | |||
| warren | "Hi, Eduardo - sounds interesting! Maybe @schroyer @willie know -- are these parts still available for purchase? " | Read more » | over 5 years ago | |||
| warren | "Just found a good video for this: https://www.youtube.com/watch?v=qWRyZDxtZ1I " | Read more » | over 5 years ago | |||
| warren | "Found an online JavaScript based version -- a little rough but maybe it means we can expand this out and do it without installing anything: http://..." | Read more » | almost 6 years ago | |||
| warren | "Hi @glennwalquist -- I'm curious if volume of sand could be measured using a 3d app like this: http://www.123dapp.com/catch Perhaps using some of..." | Read more » | about 6 years ago | |||
| glennwalquist | "@tayreed Thank-you for getting back to me regarding this subject and your thoughts on it. I think that any data that approximates the quantity of..." | Read more » | about 6 years ago | |||
| tayreed | "@glennwalquist Hey Glenn, Ah, I'm struggling to come up with options for analysis of Sargent's operations. The only thing I can think of is lands..." | Read more » | over 6 years ago | |||
| glennwalquist | "@warren Thanks for the copies of the trail cam instructions! " | Read more » | over 6 years ago |