ceramic

31

stone

16

mortar

13

iron

9

metal

5

wood

3

copper

2

cast iron

1

leather

1

rope

1

brick fragment

16

tile

16

mortar fragment

14

stone

10

cable

6

nail

4

iron bar

2

atmospheric pipe section

1

beam

1

dockyard building

1

drawing office

1

gauge rail

1

Iron filings

1

Iron fragments

1

iron plate

1

wall fragment

1

1800-01-01

58

1836-01-01

4

1839-01-01

1

1840-01-01

1

1843-01-01

1

1866-01-01

1

1914-01-01

1