made in u.s.a.

Day 10:  Ever wonder how they make these things?  I found a video....scroll down.

Made in USA, by D&L Foundry, found in NYC.

 

Not all covers have marking from where it's made.  

Here's one from Bridgewater, NJ.  Made by Campbell Foundry Company in Harrison, NJ.  

 

 

Science Channel's "How It's Made": Manhole Covers

 

 

Tomorrow:  more about how they are made outside the US.