etching

with a techniquecalled deep reactive ion etching.And this particular technique is one that's been borrowed

and the US passed legislation illegally seizing the land.50 years later, workers began etchinginto the Lakota’s sacred Six Grandfather’s Mountain.

played a major, major rolein etching this into our minds.The sounds of the drum provoke emotion and movement.

And it turns out that you can solve this problemby etching the image of a fly in the back of the urinal.(Laughter) (Applause)