Sensing and protection for the people who work underground and in open-cast mines.
Low-cost sensors read the air across the mine.
Sudden changes are flagged straight away.
Workers breathe filtered, powered air.
A live digital map of underground and open-cast mines, built from a network of low-cost sensors.
A proposed powered-air mask with ear protection for mine workers. Drag the model.
Six capabilities across two projects, each built around a real problem in the mine.
One view of underground and open-cast mines that updates as conditions change.
A network of low-cost sensors measures pollution across the site.
Spots sudden shifts in readings so teams can take action quickly.
A filter cartridge aimed at PM1, PM2.5 and PM10 dust.
A built-in blower supplies air for easier breathing.
Headphones that help reduce machinery noise.
Found something confusing, or have an idea? Your feedback goes only to the BrownBerg team.
Your feedback has reached the BrownBerg team.
Two prototypes, one goal: safer mines.
A live digital map of underground and open-cast mines, built from a network of low-cost sensors.
Prototype, in development
One shared picture of underground and open-cast mines as conditions change.
Sensors that monitor pollution and flag unusual changes as they happen.
Helps teams take action quickly when something is wrong.
Keep scrolling. Sensors report, an unusual change is flagged, and the team can act.
A proposed smart safety mask for mine workers: dust filtration, powered airflow and semi noise-cancelling headphones.
Prototype, untested
A filter cartridge aimed at harmful dust: PM1, PM2.5 and PM10.
A blower unit that supplies air for easier breathing.
Ear protection with headphones that help reduce machinery noise.
Keep scrolling. The model turns and pulls apart as the story moves on.
Rotate, pull the parts apart and trace the airflow. Concept geometry, not manufacturing CAD.
Prototype status. Terra Mask is a proposed design. Filtration, airflow, face-seal leakage, noise reduction, battery runtime and mine-safety suitability are untested, and it is not a certified respirator.
A concept demonstration video of Terra Mask.
The problem each product is built around, and what we do differently.
Conventional monitoring equipment is costly, so mines can only afford a few measuring points. Large areas go unchecked, and readings between checks are missing.
Each sensor is designed to be low-cost, so the same budget can cover more of the mine and measure pollution across the site.
Readings sit in separate logs and devices, so it is hard to see what is happening in underground and open-cast areas at the same time.
Readings from underground and open-cast areas appear on one live map that updates as conditions change.
A sudden change in the air can go unseen until the next check, or until someone feels it.
MineSentry is designed to spot sudden shifts in readings and flag them, so teams can act quickly.
Fine dust (PM1, PM2.5 and PM10) hangs in mine air and is breathed in for the whole shift. Long-term exposure is a known cause of serious lung disease in miners.
A multi-stage filter cartridge, proposed as HEPA plus activated carbon, is aimed at PM1, PM2.5 and PM10 dust.
Ordinary masks make you pull air through the filter yourself, which gets tiring in heat and heavy work.
A built-in blower supplies air to the mask, so breathing takes less effort.
Dust and machinery noise are separate hazards, so workers wear and carry separate gear for each.
Dust filtration, powered airflow and semi noise-cancelling headphones are combined into a single design.
What prototype means here. Both products are early designs. Filtration, airflow, noise reduction, detection accuracy and battery life have not been independently tested, and neither product is certified. Test results will be added here when they exist.
Questions, ideas or interested in a pilot? Reach the team directly.
Thank you. The team will reply to the email address you gave.
Found something confusing, or have an idea? Your feedback goes only to the BrownBerg team.
Your feedback has reached the BrownBerg team.
What personal data this website handles, why, and the rights you have over it.
The short version. This website has no accounts, no analytics, no advertising and no tracking cookies. The only personal data we receive is what you choose to send us by email, WhatsApp or the Contact form, and we use it to reply to you. You can ask us to show it to you, correct it, delete it, or stop using it, at any time.
BrownBerg (“BrownBerg”, “we”, “us”) designs sensing and protection technology for mines. This page explains how we handle personal data when you use this website or contact us. It is our notice to you under Section 5 of the Digital Personal Data Protection Act, 2023 (the “DPDP Act”) and Rule 3 of the Digital Personal Data Protection Rules, 2025 (the “DPDP Rules”).
For the personal data described below, BrownBerg is the “Data Fiduciary” and you are the “Data Principal”.
We keep this to the minimum needed. Here is everything, itemised.
| Data | When | What happens to it |
|---|---|---|
| Name, email address and message typed into the Contact form | Only when you tick the consent box, press “Compose email” and then send the email yourself. | This page does not transmit the form. It only opens your own email app with the text filled in. We receive it only if you press send there. It is then held in our email account. |
| Name, email address, company (optional), your role and message typed into the Contact form | Only when you tick the consent box and press “Send message”. | The form sends this to our form service, Formspree (Formspree, Inc., United States), which forwards it to our email account. Formspree also keeps submissions in its own records under its privacy policy. We receive it only when you press send. |
| Feedback typed into the Feedback box on the Home and Contact pages: a star rating, your feedback, and a name and email address only if you choose to give them | Only when you tick the consent box, press “Compose email” and then send the email yourself. | This page does not transmit the feedback. It only opens your own email app with the text filled in. We receive it only if you press send there. It is then held in our email account. |
| Feedback typed into the Feedback box on the Home and Contact pages: a star rating, your feedback, and a name and email address only if you choose to give them | Only when you tick the consent box and press “Send feedback”. | The box sends this to our form service, Formspree (Formspree, Inc., United States), which forwards it to our email account. It is not shown on this website; only the BrownBerg team members who handle enquiries can read it. Formspree also keeps submissions in its own records under its privacy policy. |
| Name, email address, phone number and anything you write | When you email us or message us on WhatsApp directly. | Used to reply to you. Held in our email account and WhatsApp. |
| Questions typed into the on-site assistant | When you use the assistant. | Answered inside your browser from fixed text on this site. What you type is not sent to us or to anyone else, and is gone when you close or reload the page. |
| Display choices: light or dark theme, language, captions on or off | When you use the theme button, the language button or the CC button on the video. | Saved in your browser’s local storage on your own device (keys bb-theme, bb-lang and bb-cc). They are not cookies, we cannot read them, and they do not identify you. Clear your browser’s site data to remove them. |
| Technical data: IP address, browser type, pages requested, date and time | Automatically, whenever a page, font or script is loaded. | Seen by the company that hosts this website when your browser requests a page. The fonts and scripts are built into the page, so no other company receives this data from your visit. We do not collect or analyse this data ourselves. |
We do not collect payment details, government ID numbers, precise location or biometric data. We do not use cookies, analytics, advertising or tracking tools on this website.
We rely on your consent (for the Contact form and the Feedback box, the box you tick, which you can withdraw at any time) and, where you send us a message on your own initiative, on the specific purpose for which you gave us your details, as allowed by Section 7 of the DPDP Act. We do not use your details for anything else, and we do not send marketing messages unless you ask us to.
We do not sell or rent personal data, and we do not share it for advertising. The WhatsApp buttons open WhatsApp, a separate service with its own privacy terms.
The providers named above (including Formspree, which is based in the United States, when the Contact form or the Feedback box is used) may store or process data on servers outside India. The DPDP Act allows this unless the Central Government restricts a particular country by notification. We will not knowingly send personal data to a restricted country.
We keep a message and the contact details in it until your enquiry is dealt with, and then for up to 24 months after our last exchange. After that we delete it, unless you ask us to delete it sooner or a law requires us to keep it longer. Display choices stay in your browser until you clear them. Technical logs are kept by the providers in section 4 under their own policies.
This website stores no personal data of its own: it has no database and no user accounts. The Contact form and the Feedback box, when switched on, hand your message straight to our form service (Formspree) and does not store it on the website. It is served over an encrypted (HTTPS) connection and loads files from as few outside sources as possible. Messages you send us sit in email, WhatsApp and (for the Contact form and the Feedback box) Formspree accounts that only the BrownBerg team members who handle enquiries can open. We use reasonable security safeguards suited to the small amount of data we hold.
If a personal data breach affects you, we will tell you and the Data Protection Board of India as the law requires.
This website is for business and professional visitors. We do not knowingly collect personal data from anyone under 18. If you are under 18, please ask a parent or lawful guardian to contact us instead. If we find that we hold a child’s data without the verifiable consent of a parent or lawful guardian, we will delete it. We do not track or monitor the behaviour of children, and we do not show them targeted advertising.
Under the DPDP Act you have the right to:
To use any of these rights, email us at the addresses in section 10, preferably from the address you used when you contacted us, and tell us what you want. We may ask a few questions to confirm that you are the person concerned. We will respond within the time set by the DPDP Rules.
The DPDP Act also asks you to give accurate information, and not to impersonate anyone or make false or frivolous complaints (Section 15).
For questions, requests or complaints about your personal data, write to the BrownBerg founders, who handle data protection for us:
If we have not resolved your grievance, you may complain to the Data Protection Board of India. Under Section 13 of the DPDP Act you should first give us the chance to resolve it.
This policy is in English. If you would like it in another language listed in the Eighth Schedule to the Constitution of India, write to us and we will provide it.
We may update this policy. The date at the top shows when it last changed, and if a change affects how we use your data we will ask for your consent again where the law requires it. This policy is governed by the laws of India.