Part of the construction was sound-proofed and this section is where it is believed the two daughters, now aged 11 and 15 and called Scarlett or Starlite and Angel, were born.

Its construction is divided into two parts, one is the lower part of the manhole cover, ensure that the level of it, it needs to be placed in the asphalt material, dealing with rigid cap.

Here in Part Two, I focus on measurement during the "mainstream" of the development work: the Elaboration and Construction phases.