Westland Provincial Gazette – 1870 – No. 24

Page 129

✨ Mining Regulations



METHOD OF GUAGING.

Diagram

LEVEL OF WATER IN RACE.

This box will give a discharge of about thirty-three (33) cubic feet of water per minute.

If more than one (1) sluice head of water requires to be gauged, the box should be increased in width twenty (20) inches for each additional head, all the other dimensions remaining as before. When this cannot be done, owing to natural obstacles or other sufficient reasons, the guage box may be enlarged perpendicularly, as follows:

The depth of the pressure or head board is to be reduced five eighths (⅝) of an inch, the aperture increased in height one (1) inch, and the height of the guage box consequently increased three eighths (⅜) of an inch. For each additional head of water that is perpendicularly measured, the height of the bottom bar and the width of the box remaining constant throughout.

FOR ONE HEAD.

  • Pressure board: 20 x ⅝
  • Aperture: 20 x 1
  • Bottom bar: 20 x 2

FOR TWO HEADS

  • Pressure board: 20 x 5 ⅜
  • Aperture: 20 x 2
  • Bottom bar: 20 x 2

FOR THREE HEADS

  • Pressure board: 20 x 5 ⅜
  • Aperture: 20 x 3
  • Bottom bar: 20 x 2

FOR FOUR HEADS

  • Pressure board: 20 x 4 ⅝
  • Aperture: 20 x 4
  • Bottom bar: 20 x 2

FOR FIVE HEADS

  • Pressure board: 20 x 4
  • Aperture: 20 x 5
  • Bottom bar: 20 x 2

FOR SIX HEADS

  • Pressure board: 20 x 5 ⅝
  • Aperture: 20 x 6
  • Bottom bar: 20 x 2

FOR SEVEN HEADS

  • Pressure board: 20 x 2 ¾
  • Aperture: 20 x 7
  • Bottom bar: 20 x 2


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Online Sources for this page:

VUW Te Waharoa — PDF Westland Provincial Gazette 1870, No 24




✨ LLM interpretation of page content

🌾 Regulations for Races and Water Rights (continued from previous page)

🌾 Primary Industries & Resources
Races, Water Rights, Mining, Warden, Regulations