---
title: ""Petra, founded by serial entrepreneur Kim Abrams, says it's…"
date: 2022-01-12
source: facebook
type: Archer T. Ships shared a link.
---

# "Petra, founded by serial entrepreneur Kim Abrams, says it's…

*January 12, 2022 · Facebook*

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[https://newatlas.com/technology/petra-thermal-drill-robot/](https://newatlas.com/technology/petra-thermal-drill-robot/){target="_blank"}
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\"Petra, founded by serial entrepreneur Kim Abrams, says it\'s demonstrated the robot\'s capabilities by boring a 24-inch tunnel through 20 feet of Sioux Quartzite -- which Abrams describes in a CNBC interview as \"the hardest rock on earth \... harder than bluestone granite \... the type of rock that would normally have to be dynamited.\" Swifty progressed at a rate of an inch a minute.\"\
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[https://newatlas.com/technology/petra-thermal-drill-robot/](https://newatlas.com/technology/petra-thermal-drill-robot/){target="_blank"}
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