My WebLink
|
Help
|
About
|
Sign Out
Home
Browse
Search
1987-12-01_PERMIT FILE - C1981017 (284)
DRMS
>
Day Forward
>
Permit File
>
Coal
>
C1981017
>
1987-12-01_PERMIT FILE - C1981017 (284)
Metadata
Thumbnails
Annotations
Entry Properties
Last modified
1/4/2021 6:55:45 AM
Creation date
6/2/2008 12:43:41 PM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1981017
IBM Index Class Name
PERMIT FILE
Doc Date
12/1/1987
Doc Name
Subsidence Study By Dr. Bruce Collins
Section_Exhibit Name
Chapter IV Appendix IV-F-4
Media Type
D
Archive
No
Tags
DRMS Re-OCR
Description:
Signifies Re-OCR Process Performed
There are no annotations on this page.
Document management portal powered by Laserfiche WebLink 9 © 1998-2015
Laserfiche.
All rights reserved.
/
55
PDF
Print
Pages to print
Enter page numbers and/or page ranges separated by commas. For example, 1,3,5-12.
After downloading, print the document using a PDF reader (e.g. Adobe Reader).
View images
View plain text
Angle of draw (91) assuming subsidence to MC-13: <br /> x <br /> 8 = tan-1 2 <br /> 1 Hcos20 <br /> = tan-1 743 <br /> 2866cos27.90 <br /> = tan-1 743 <br /> 2866 0.98 <br /> = tan-1(0.26) <br /> = 14.80° <br /> Angle of draw (92) assuming subsidence to MC-14: <br /> x <br /> 82= tan-1 2 <br /> Hcos 0 <br /> = tan-1 921 <br /> 2866cos27.90 <br /> = tan-1 921 <br /> 2866 0.98 <br /> = tan-1(0.33) <br /> • = 18.140 <br /> Angle of draw (Aa) assuming subsidence to point midway bewteen <br /> MC-13 & MC-14: <br /> x <br /> 8 = tan-1 3 <br /> a Hcos20 <br /> = tan-1 832 <br /> 2866cos27.90 <br /> = tan-1 832 <br /> 2866 0.98 <br /> = tan-1(0.30) <br /> = 16.480 <br /> • <br />
The URL can be used to link to this page
Your browser does not support the video tag.