Caliche

[lynnharris]

Does anyone know how far in the tunnel's they put caliche?

 

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[Jeffro]

I don't understand the question-

How far did they tunnel through caliche?

Or did they put caliche in tunnels?

Or something totally different?

 

[Gypsy Heart]

I think caliche is a calcium deposit and they use it in cement making,unless you are in Peru...then its a salt deposit.
Unless this is something used for mining.....I think they meant cache.

 

[lynnharris]

When they would seal the mine they would make and use caliche,right? How far in the tunnel would they put it?

 

[djui5]

6' should do it. Sometimes more depending on how sealed they want it. Usually they backfill the hole with dirt, then use caliche the last 6'-3'

Where do you plan on digging?

 

[lates]

In the entrances I work in I have never had to go through more than a foot of it.

Matt

 

[stefen]

Caliche is a poor-mans concrete and is naturally formed. It is a term for calcium carbonate (CaCO3) that forms in sediments or in voids and crevices within bedrock just below the surface in semiarid regions, as a result of soil-forming processes or ground-water evaporation.

It is usually a material left behind by evaporation of ground water.

The layers are a few inches to several 4 or more feet thick, and acts as a percolation barrier of soil from precipitation or artificial watering.

The majority of the soil in the Las Vegas area is underlaid with a lense of caliche which must be exposed and/or penetrated to facilitate runoff and for planting or large shrubs and trees.

There is a chance that this material was man-placed in a tunnel for whatever purpose.