My WebLink
|
Help
|
About
|
Sign Out
Home
Browse
Search
GENERAL47863
DRMS
>
Back File Migration
>
General Documents
>
GENERAL47863
Metadata
Thumbnails
Annotations
Entry Properties
Last modified
8/24/2016 8:23:16 PM
Creation date
11/23/2007 3:51:48 PM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1981013
IBM Index Class Name
General Documents
Doc Date
7/10/1995
Doc Name
OSM letter
From
OSM
To
DMG
Permit Index Doc Type
CITIZEN COMPLAINTS
Media Type
D
Archive
No
There are no annotations on this page.
Document management portal powered by Laserfiche WebLink 9 © 1998-2015
Laserfiche.
All rights reserved.
/
27
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
<br /> <br />Calculations for protection of surface structures: <br />Input Data: <br />Protection Area: <br />Average overburden depth ....... <br />Structure width (includes all buildings).... <br />Structure length .(includes all buildings).. <br />Minimum angle of protection ................ <br />Maximum angle of protection ................ <br />Structure dimension adjustment <br />(15' step out on all sides). ............. <br />Maximum extraction in protection area ...... <br />Calculated Parameters: <br />Structure Protection Area: <br />Angle Area Area Total Extracted <br /> Width Length Area Area <br />(degl (ftl (ftl (ftl2 fftlz <br />15 335 335 112276 56138 <br />20 416 416 172834 86417 <br />25 502 502 251698 125849 <br />30 595 595 353990 176995 <br />420.00' <br />80.00' <br />80.00' <br />15.0 0° <br />30.00° <br />30.00' <br />50.00$ <br />Note: The 20 to 30 degree areas are calculated to be applied <br />in areas of steep slopes. Since this area is flat the 15 <br />degree area was used in the illustrations. <br />Table Ii. 6DP5 calculation to determine the area of coal to <br />be left in the Golden Eagle Mine if the panel progressed <br />under the Tatum House to protect it from mine related <br />subsidence damage. <br />13 <br />
The URL can be used to link to this page
Your browser does not support the video tag.