Inherited possible native artifacts? Arrowheads/knives?

[Misnomer]

Hi everyone, thanks in advance your help with these. My grandpa left pails of rocks in his garage when he passed, which after some investigation over the years I’m thinking might be native artifacts? Doing some spring cleaning so I decided to finally clean them up and snap some pictures to recruit some help. I’ve tried to group them wth similar stones. Time to either dump these in the garden or find out if there are indeed some legitimate artifacts in there to display!

 

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[smokeythecat]

Yes, I'd say about a third were worked on by people. Look for the jagged and chipped edges. Rounded edges, they're natural.

 

[Treasure_Hunter]

Sorry for the loss of your grandson. Dump them in the garden.

 

[Misnomer]

No apologies needed it was years ago and I am not attached to these just want to know. Thanks for all your help! I’ll take a look at those edges.

 

[smokeythecat]

First picture. From the left, first row, the one on the bottom is a keeper. Second row, 3rd and 4th from bottom keep, third row, 2, 3, 5, 7, 8 from bottom are possibilities.

Fourth row, 3rd from bottom take another look at it.

Rows are vertical.

 

[Misnomer]

Wow thanks a lot that’s a huge help!!