2024-12-16_REVISION - M1977410 ‎(9)‎

• Permit No: M1977410
• IBM Index Class Name: Revision
• Doc Date: 12/16/2024
• Doc Name Note: Appendix E-1 Figure 1 & Appendix E-1 Figure 2 Portal & Shaft Closures
• Doc Name: Request For Conversion
• From: Grand Island Resources LLC
• To: DRMS
• Type & Sequence: CN1
• Email Name: JPL
• Email Name: JLE
• Email Name: EL1
• Email Name: LJW
• Email Name: THM
• Media Type: D
• Archive: No

Appendix E-1 Figure 1
/
......
B -
I
~
/
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Existing ground level /
"/ • ' ' ' • • ' ' • '
Concrete footing
A
--• -I --I 1,,. I
' ,,
' ' ' • ' '
' ' '
•
'
CONCRETE BLOCK
WALL CLOSURE
'/ -
Opening frame
(C 10X20's ,velded)
.......
/_ -
~
\:/
0. /
v -
I
~
/
...... -
I
/ \
...... • -B'
C 10X20
door frame
/ . ¼" I I tJ Typ
2"x2"x¼" / L
g rate frame
~
V
'
j/
V
~
i\ccess door (25¾"x25¾")
:71
"
~
~
'
\
\ ~ / ' I\
' \
' \
\ -
...... \ ~
~\
V See Lock Box
Detail.'\
I
~ 6n drai . np1pe GRATED ACCESS DOOR
V
/ (if req uired)
H¼H 8½"L 3"x3
back plate
to grate fr
,velded
ame
C 10X20 /
27"
L3"x3"x¼
grate seat
"
/
v
I;:
I;:
I;:
I;:
//
.,
// ,~
li:f i;: 'J 'l
I/ v v/
v v '
0
1 Yi H 16
1 nx2¾n opening cut in / back plate for hasp
~ l¾"xl¾"x¾" hasp
( see Hasp Detail)
~
II II
L2nx2n¼n
12 "x8½" . . opening m
grating
L2nx2n¼n framed
mg;
ating
I/ around open
,velded to gr
r,
'--J ¼H 11
Typ.
Door grating (l¼"x1/i 6 " bearing
@ 11/i 6 " O.C., ¼"round
ods@ 4" O.C., type
(19-4-53); tack ,veld
other bearing bar to grate
cross rod side inside
bars :-,
cross r
WX.'\
every
frame;
¼" V
6n ext ra heavy duty hinges
,n non-remo,.'able
velded to door frame
ate frame
,vith Y . pins; ,
and gr
¾n circular
opening
l¾nxl¾nx¾n hasp
HASP DETAIL
~----27" opening--------i #5 rebar each cell (typ.) grate frame
~
I. • •• 2 H @ 12" C 10X20~ • -• .. ., = ' ' • • ' ' • • ¼H I • ' • ,. • •• •• • • • • • • • • • • ..z· • -' • -
' ' ~ ~ • • ' • • • -' • ..
' • --' • • See Lock Box • .. . • • • • •• • • '• ;;" • • / Detail B • -' • ? • • • • • • ' ,
~
"
4x4 W2.0xW2.0 steel
mesh@ 8" O.C. vertical
CONCRETE BLOCK
WALL CLOSURE
SECTION B-B'
/ )
-• '✓ , . ' . • ,/ • • ' • ' ' . .. • • • • • ' • • • ' ' • ',. • ' •
I
• ' ' • • • ' • ' • • • • I • • • • • • •
I/ ~--• ,. • • • • ' ., • • ' • ., • , .
• • ' • • ( • • • •
' • • ' I'-. , '
• \
~ Grout all cells and
space bet,veen blo
See Hinge Detail
C 10X20
cks
LOCK BOX
DETAIL A
(Front plate not sho,vn)
2"@6"
¼H
27"
L3nx3n¼n
grate seat
L2nx2n¼n
grate frame
C 10X20
6" extra heavy duty hinges
,vith ½" non-removable .
----1 f--½"
8½nL 3nx3n¼n
back plate
HINGE DETAIL
L2nx2n¼n
grate frame
LOCK BOX
DETAILB
8½"x4"x¼" front plate
,velded to frame and grating
C.Li\.UTION: This project requires construction work around and
over hazardous and unprotected 1ninc shafts, stopc, adits, and other
openings which 1nsy be open to the surfucc or hidden fi-0111 view by
tmsh, debris or thin and unstable layers ofsurficial 1natcrials or rock.
The contractor shall be responsible for thoroughly investigating the
site conditions and scheduling his cquiptnent, cquiptnent opcmtions,
personnel and safety procedures to prevent accidents and injuries.
/ -- -
-I
~ / I
• ' ~ /
'
11 • 11
11 11
11 11
11 11
11 11
11 11
11 11
11 11
•
11 '· 11
11 ' 11
~ / I
~
~ / ~ / ' -/ ~ / ...... ~ //
4x4 W2.0xW2.0 steel
mesh@ 8" O.C. vertical
C 10X20
opening frame
-
Grated access door
6" drain pipe
(if required)
24"
L_
I I
I I
I
I I
I I
27"
30n min .
f--footing ,vidth ----1
24n min.
Concrete footing
If rock is greater than 3' belo,v
grade, bottom of footing is to be
placed 3' minimum belo,v grade
on 12" of compacted (min. 90%
relative density) material.
CONCRETE BLOCK
WALL CLOSURE
SECTION A-A'
COLORADO
DIVISIC)N ()F
MINE&RALS
GEOLOGY
RECL.AMA TION•MIN I NG
SAFEn"•SCIENCE
INACTIVE MINE RECLAMATION PROGRAM
STANDARD DRAWING No. 12
CONCRETEBLOCKBULKHEADSEALCLOSURE
Scale Varies 12/15/03 Sheet No. 1 of 1
Drawn by: JTG Reviewed by: JTH & ALA