[Hessah]

I found a trick about that yellow line on the green bar.

The tip of your cursor must be right in the middle of your little yellow line.

And you must click at the right time (when the green bar reaches the yellow line.)

I got into a mining craze coz i need it for decomposition and stone material... and after about 100 ore practice, I how finish mining quicker about once every 2-3 ores... (i found that if the line is too close to the edge it's harder to get it right)

It does work, u've just gotta place your cursor carefully on the yellow line and click at the right time.