Both were from 2 inches suction dredge + high banker combo for River gold. As a new comer in this job, I have been busy lately with learning and solving gravel clogging and learning everything from ground zero. Hand not enough time to check thoroughly every single piece of gravel out of my high banker. Burma is famous for Jadeite jade and ruby plus many different gemstones.
About the gold prospecting, I still have troubles getting through with it. May be the way I set up the mat, mash screen and rifle. Mat is down riffle type, mash screen is about half inches where riffle is welded around 45' angle.
The river bank I'm working has adult fist size broken brick piece to 1/8 mash screen size gravels and pebbles which are very easy to get clogged up and wash away the gold in half full shovel. So I bought a 1/8 mash screen and will install over grizzly and see the result in evening.
I'll also upload working pictures and let Tnet members to give me advice by tomorrow evening.
Thanks for reply and looking forward more words of advice from all of you.
Kindly regards
Rice Man