Item

 Year

Furnace

What Exists Today

Location

 1

1720

 Colebrookdale

Historical Marker

Colebrookdate Twp., Berks

2

 1726

 Rock Run

No Marker

South Coventry Twp., Chester

 3

 1727

Durham

Marker

 

Durham Twp., Bucks

4

1735

 David Jones

No Marker

btw Elverson and Morgantown, Berks

5

1736

 

Reading

Marker

 

Warwick Twp., Chester

6

1737

 

Warwick

Historical Marker

Warwick Twp., Chester

7

1737

Mt. Pleasant

No Marker

Washington Twp., Berks

8

1742

 

Cornwall

Furnace at Shutdown

Cornwall, Lebanon

9

1750

 

Hereford

Historical Marker

Hereford Twp., Berks

10

1750

 

Elizabeth

No Marker

Elizabeth Twp., Lancaster

11

1754

 

Martic

 

Unknown

Conestoga Twp., Lancaster

12

1755

Roxborough (Berkshire)

Historical Marker

Lower Heidelberg Twp., Berks

13

1760

 

 Oley

Historical Marker

Oley Twp., Berks

14

1760

 

 Rebecca

Unknown

West Nantmeal Twp., Chester

15

1762

 

Mary Anne

Unknown

West Manheim Twp., York

16

1762

 

 Carlisle

Furnace at Shutdown

Boiling Springs, Cumberland

17

  1765

 Codorus (Hellam)

 Unknown

 Hellam Twp., York

18

  1768

 

 Windsor

 Unknown

 Albany Twp., Berks

19

  1770

 

 Pine Grove

 Furnace at Shutdown

 Cook Twp., Cumberland (Pine Grove St. Park)

20

  1770

 

 Mt. Holly

 No Marker

 Mt. Holly Springs, Cumberland

21

  1771

 Hopewell

 Furnace Restored as of 1771

 Union Twp., Berks

Iron Furnaces in Pennsylvania Prior to Hopewell Furnace