Shaft details

• running-on level:(above OD)
• North (1951)
• top deck:      525.58 ft
• bottom deck:   514.16 ft
• South (1951)
• top deck:      514.11 ft
• bottom deck:   507.79 ft

• depth:
• North 
• 1877:      520 yd
• 1955:     590 yd
• South 
• 1879:     512 yd
• 1922:     903 yd

• diameter:         14½ ft
• alignment:       NE-SW
• seperation:       94 yd
• construction:
• North 
• 18 yd:       @ 18in brickwork
• 117 yd:      @ cast iron tubbing
• remainder:   @ 9in red brick
• South
• (18 yd):     @ 18in brickwork
• (117 yd):    @ cast iron tubbing
• remainder:   @ 9in red brick

Shaft cables

• Power
• Signal
• Telephone
• Telemetry

Shaft pipes

• rising pump main
• descending water main
• methane extraction?

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12 Jan, 2012