An Indian, Washington, Wheat And ??

[Tom_in_CA]

If you have found a spot on the dry sand of a So. CA beach, where you can reach back to silver (assuming you can go insanely deep), then that means you must have a dry-sand zone that is above all past erosion events.  Ie.:   Dry sand that hasn't seen salt water since 1964.

 

The army corps of engineers made a bunch of So. CA jetties back in the 1940s/50s, and '60s.   Which acted as "groins" that captured lots of sand, and made for enormous beaches (since sand no longer "migrates").   And so there are some So. CA beach zones where, back up against the cliffs, the sand has now remained unchanged since the 1940s/50s/60s.   Granted:   The silver isn't going to be terribly old, and granted, it will be terribly deep.   But I know of some guys who made sport of hunting these zones , with super-high-powered nugget machines (where you can get a dime to 1.5 ft. deep) and found enough silver to keep it interesting.

[mn90403]

Tom,

You are correct about the sand.  The artificial jetties are now a minor surfing spot called the Santa Monica jetties.  This was also where the Long Wharf was located at Will Rogers State Beach.

CHL No. 881 Port of Los Angeles Long Wharf - Los Angeles

Guidebook

In 1893 the Southern Pacific Railroad Company completed its 4,720-foot wharf, which served as a deep water port for the Los Angeles area. But after San Pedro became Los Angeles's official harbor in 1897, shipping activity at Port Los Angeles declined and the wharf was finally dismantled. Today, no trace remains of what was once the longest wooden pier in the world.

Location

Will Rogers State Beach Lifeguard Hdqtrs, 15100 W Pacific Coast Hwy 1 (P.M. 375), Pacific Palisades

 

https://www.californiahistoricallandmarks.com/landmarks/chl-881