Above the tropopause is the stratosphere. This layer extends from an average altitude of 11 to 50 kilometers above the Earth's surface. This stratosphere contains about 19.9% of the total mass found in the atmosphere. Very little weather occurs in the stratosphere.
Cutting slate slabs does not have to be complicated; with standard tools and a suitable type of blade, you should be able to manage without a problem. Step 1 - Mark the Cutting Line and Mount the Slate Slab. Find the location on the slate slab that you want to cut and use a marker pen or pencil to draw a line across it.ou can also place it on top of two other slate slabs â anything to create a stable surface will do. The area of the slate slab marked by the pencil line should be places in the center between the two wooden or slate blocks. Step 2 - Cutting the Slate Slab. Get the circular saw and place a suitable blade in it.
Crystal Glaze Sealer Water Based-Coating Type Recommended for any absorption slate Top Picture-Vermont Slate: Top portion is unsealed Bottom portion is one application No color enhancement High gloss Bottom Picture-Indian slate: One Application-Fully Sealed Medium Gloss Little or no color enhancement. The correct sealer will increase the strength and durability of slates.  2 Gauged slate is sawn to a uniform finish height so the end result is a smoother floor. 3  It is also less expensive to install by $1.00 to $2.00 per square foot.  4 Ungauged slate is unsawn and split to size.