What were these used for?

[90cummins]

These were out in the woods behind my home which we purchased 30 years ago.
They were not used for my home nor the neighbor's.
Any one know what they were used for?

Thanks
90cummins

 

[seville009]

Looks like large sections of fireplace chimney bricks

 

[Peter 315]

These were out in the woods behind my home which we purchased 30 years ago.
They were not used for my home nor the neighbor's.
Any one know what they were used for?

Thanks
90cummins


View attachment 645427

Its old clay duct banks , Do you have under ground utilities ?

 

[kcflhrc]

Structural clay tile - Wikipedia

 

[LouNY]

Stuctural clay tile,
Structural clay tile - Wikipedia

Some interesting reading and details
Handbook of hollow building tile construction : Hollow Building Tile Association : Free Download, Borrow, and Streaming : Internet Archive

Telegraph and telephone tiles
Telephone Tile & Silo Tile

 

[QRTRHRS]

Cool! I have seen plenty of round clay pipes but never anything honeycombed like that. The clay flue liners that I am familiar with would be open inside. They would be mortered into concrete chimney blocks as the chimney was laid up.

 

[90cummins]

Its old clay duct banks , Do you have under ground utilities ?

No.
Not up here on the mountain.

 

[fried1765]

Its old clay duct banks , Do you have under ground utilities ?

That is EXACTLY what they are!

 

[MossRoad]

NATCO conduit telephone tile

NATCO Conduit Telephone Tile – Ohio Bricks

 

[MossRoad]

Another link

NATCO Conduit Telephone Tile – Ohio Bricks