SUPPLEMENTAL REPORT—HANGING ROCK DISTRICT. 9931 
The section on the left hand side of the page embraces a part of the 
measurements obtained on the Monitor Furnace lands, directly opposite 
Ashland, Kentucky. Repeated mention has been made of this section 
in the preceding pages, and it will now be described with necessary de- 
tail. The whole section obtained in this hill is the most complete yet 
found in the district. A large number of the best known elements can 
be identified, and the hill rises so abruptly that most satisfactory and 
reliable measurements can be obtained. It embraces all that the two 
sections represented in the diagram contain. The block ore, which is 
the base of the Ironton section, is found near the level of low water in 
the river. The several elements agree with the descriptions already given 
as far as they extend. The part that remains to be described is the in- 
terval between Coal No. VI and the Cambridge Limestone. 
In regard to the Sheridan Coal, which makes the base of the second 
section, nothing needs to be added. 
It is overlain, sometimes with the interposition of a few feet of shal- 
and oftener without, by a heavy ledge of sand-rock. ‘This is one of the 
well marked strata of the valley for ten or fifteen miles. It is the 
“hanging rock” that overlooks the village of this name, and so has 
come to give a designation to the entire district. 
At forty feet above the coal, a seam of ore, well known throughout the 
furnace district on both sides of the river, is found. It is designated in 
the section as the “Yellow Kidney” Ore, but no such name can be 
depended on without proper verification of the seam, for it ,will be 
found that the “Yellow Kidney ” of one furnace is the “Red Kidney ” of 
the next, and the “ Black Kidney” of still another. The name most fre- 
quently applied in the immediate vicinity has been adopted here. This 
is a mellow and excellent ore that is welcomed by every furnace of the 
region. The seam is about one foot thick in its development, and is 
quite persistent. A few feet of shale intervene between it and the sand- 
stone that supports it and it is also overlain by shale and shaly sand- 
stone. 
The Hatcher Coal was not opened in the Monitor Furnace hill, but its 
place is indicated in the section. It is found in the immediate neigh- 
borhood at an elevation of forty-five to fifty feet above the Sheridan 
seam. 
At sixty-six feet above the last named coal a Buff Limestone, two feet 
thick, is met. It isan element in almost every section of this regicn. 
It is overlain very often by a seam of ore. The ore is shown in the sec- 
tion at seventy feet above Coal No. VI. It has been quite extensively 
worked on the furnace lands, and a good report is always given of it 
