' I ■ ^. a* .^Val'- ^ > .**$!&*; ^ a* /ivWl** %. •life- \/ Mfe, %/ c> * ,<^p fry* "V r« ^ & * a4 "^> „A <* **7T»*' .6 v. *°* . C* » *

* »"i i • ' ,4*" ~0> " * o H o v -- 5 ^ \--- A / ^ - ?W\6^ V'f.^/ % J ^^\^ '^^ ;>. "*w ^o* 'oV .p v ..iu: ^^ o c ^ V % J 'JHK ; .^'V °-%w* B ^ v \ J °3& ; j^^' o Wjw. : 4.^ A . *» A 4^ lP^ ^ ^ a. ^ (»".' »■•• ^ 4" > . S * • r r\ C\» . ^ » i ■A r>> «&'^. °o' i ^taw a^^ J .^ii^; ^^ °i/w; a^^ 4- V C u ♦ s . aV^ : A \n<^ * 4^ % • ° . » » A 0^ ,.«^ ^o ■/ "^^ o_ * * ^ *~J? x\ ^rf* • • • » «V> V- « . V 5°* %* .-ate: \/.-^\ %,**' * ■S>*r J? ^ <$*■ o «*o* "bv* W 5*"* • • r *!»- J»9 <5 l\ .Mi. ■'j> o « A°* c 75 'W/NES 75TH A^ Information Circular 9007 Subsidence Information for Underground Mines— Literature Assessment and Annotated Bibliography By A. J. Fejes, R. C. Dyni, J. A. Magers, and L. B. Swatek UNITED STATES DEPARTMENT OF THE INTERIOR Donald Paul Hodel, Secretary BUREAU OF MINES Robert C. Horton, Director no, fooi Library of Congress Cataloging in Publication Data: Subsidence information for underground mines— literature assessment and annotated bibliography. (Information circular ; 9007) Bibliography. Supt. of Docs, no.: I 28.27:9007. 1. Mine subsidences— Bibliography. 2. Mining engineering— Bibli- ography. I. Fejes, A. J. (Alan J.). II. Series: Information circular (United States. Bureau of Mines) ; 9007. TN295.U4 [TN319] 622s [016,622] 84-600313 [Z6738.S76] \ (\V> 4- .N CONTENTS Page Abstract. 1 \2 Introduction 2 Acknowledgments 3 Subsidence technology required by mine operators 3 ^^^Reference assessment, rating, and categorization 3 Availability of information 4 Appendix A. — Annotated bibliography of selected references 12 Appendix B. — Comprehensive bibliography 49 TABLE 1. Categorization and rating of selected subsidence references 5 M o SUBSIDENCE INFORMATION FOR UNDERGROUND MINES-LITERATURE ASSESSMENT AND ANNOTATED BIBLIOGRAPHY By A. J. Fejes, ] R. C. Dyni, 2 J. A. Magers, 3 and L. B. Swatek 4 ABSTRACT The purpose of this Bureau of Mines report is to provide mining indus- try personnel and regulatory authorities with a subsidence-reference list and annotated bibliography that will aid them in locating sub- sidence information and in developing their own subsidence information sources. Over 700 references are listed in the Bureau's subsidence in- formation center bibliography; approximately 600 of these references were obtained for assessment. Of these 600 references, 167 were select- ed to be rated, categorized, and annotated. All literature referenced in this report was published prior to 1984. Table 1 is a cross- referenced index that classifies and rates selected references with respect to specific keywords. References are rated not on quality of content but rather on applicability to given subject areas. Appendix A is an annotated bibliography of the references listed in table 1 and provides further information on each article to aid the user in select- ing articles for specific areas of subsidence technology. Appendix B is a copy of the subsidence information center bibliography. ^Mining engineer. ^Physicist. •^Engineering technician. 4 Civil engineer (now with Office of Surface Mining, Denver, CO) . Denver Research Center, Bureau of Mines, Denver, CO. INTRODUCTION This Bureau of Mines report identifies sources of subsidence information that are often unknown or unavailable to mine industry personnel. Its purpose is to assist the mining industry and regulatory authorities by providing a subsidence- reference list and annotated bibliography that will aid them in locating subsidence information and in developing their own subsidence information sources. A subsidence information center was started at the Bureau's Denver (CO) Re- search Center in 1980 to create a sin- gle, central, and comprehensive source of available state-of-the-art subsidence literature and provide this information to mine operators attempting to limit or control mining-related subsidence damage. An intensive literature search was per- formed to compile a comprehensive subsid- ence bibliography. This search included the use of computerized information re- trieval systems, published bibliogra- phies, and individual assessments of sub- sidence article bibliographies. At the end of 1983, the bibliography contained over 700 references with approximately 600 subsidence references available for consultation at the Bureau's Denver Re- search Center. From these available references, articles were selected and annotated; the procedures used for se- lecting articles are described later in this report. All annotated articles in this report are on file at the research center. The Surface Mining and Reclamation Act of 1977, Section 516 (b)(1) of Public Law 95-87, requires mine operators to adopt "...measures consistent with known tech- nology in order to prevent subsidence causing material damage...." This report outlines available litera- ture that pertains to state-of-the-art subsidence technology, developed in the United States and abroad, that will as- sist persons developing subsidence con- trol plans. Included in the literature is information on subsidence-predic- tion methods, subsidence-related mate- rial damage, subsidence-control measures, subsidence-monitoring procedures, and subsidence law. This report describes subsidence tech- nology required by mine planners , key- words developed for characterization of references, rationale used for selecting and rating references in appendix A, and availability of references. Table 1 lists 167 references selected for annotation. It identifies the con- tent of each reference and rates the con- tent of each reference with respect to its applicability to the given subject areas. The table is cross-referenced, subject versus reference, to assist users in locating information on a specific area of subsidence technology or on a specific subsidence reference. Appendix A is an annotated bibliography of the references in table 1 and provides further information on each article. In- cluded in each annotation is biblio- graphic information and a brief descrip- tion of the content, ease of use, and applicability of subsidence information. Appendix B is the subsidence informa- tion center bibliography, including all references in appendix A. Of the 767 references listed in appendix B, approxi- mately 600 were assessed for possible in- clusion in appendix A. The remaining articles were not assessed because they were out of print, not available in English, or not attainable. Since most engineers who apply the sub- sidence technology have neither the time nor money to expend on an extensive search for subsidence literature, it was felt that it would be appropriate to assess only those articles that are read- ily available to U.S. subsidence engi- neers and mine planners. However, all references were included in appendix B for completeness. Of the approximately 600 references obtained for assessment, only 167 articles were annotated. These articles were considered by the authors to be representative of state-of-the- art technology for the given key subject areas. The annotation of over 600 arti- cles would provide an unwieldly reference that would have been costly and time con- suming to produce. ACKNOWLEDGMENTS Larry R. Powell, geologist, Twin Cities (MN) Research Center, Merle T. Bernstein, librarian, Twin Cities (MN) Research Cen- ter, and Betsy Chapel, librarian, Denver (CO) Research Center, are acknowledged for their efforts in obtaining and pro- viding subsidence references assessed in this report. This project received strong support and encouragement from the Office of Sur- face Mining and was developed and closely coordinated with that organization from the outset. SUBSIDENCE TECHNOLOGY REQUIRED BY MINE OPERATORS To control, mitigate, or prevent mining-related subsidence damage, mine planners must be able to adequately es- timate the location and magnitude of ver- tical and horizontal displacement, cur- vature, tilt, and strain at the ground surface. Although it is impossible to totally eliminate surface effects from underground mining, adequate subsidence- prediction methods used in conjunction with proper mine-design and damage- mitigation techniques can minimize ad- verse surface effects. State-of-the-art subsidence technology is scattered throughout numerous institu- tions and is unknown or unavailable to many mine planners. This report attempts to minimize this problem by locating, assessing, rating, and categorizing this information with respect to five key sub- jects: (1) prediction methods, (2) ma- terial damage, (3) subsidence control, (4) subsidence monitoring, and (5) sub- sidence law. Information relating to these subjects can assist mine operators in complying with Public Law 95-87. REFERENCE ASSESSMENT, RATING, AND CATEGORIZATION The following five key subjects were used to assess, rate, and categorize sub- sidence literature. They represent the areas of subsidence technology that will assist mine planners in developing a subsidence-control plan in accordance with Public Law 95-87. • Hydrologic damage to surface wa- ter including rivers, streams, and sur- face drainage. • Hydrologic damage to ground wa- ter systems. 3. Subsidence Control 1. Prediction Methods • Means of predicting vertical ground displacements at the surface. • Means of predicting horizontal ground displacements at the surface. • Applicability to the Appalach- ian Coal Region. • Applicability to the Illinois Coal Basin. • Applicability to the Rocky Moun- tain Coal Region. 2. Material Damage • Damage to surface structures. • Damage to subsurface structures. • Controlling subsidence with properly designed underground-mine layouts. • Controlling or limiting sub- sidence with backfilling techniques. • Minimizing structural damage through design and construction (sur- face measures) . 4. Subsidence Monitoring • Design of monitoring systems for measuring surface effects. • Instrumentation required for monitoring systems. • Survey methods for measuring vertical and horizontal displacements. • Surveying required for subsid- ence monitoring. • Data processing methods for subsidence data and information. 5. Subsidence Law • Federal laws that relate to min- ing subsidence. • Laws that relate to mines in the Appalachian Coal Region. • Laws that relate to mines in the Illinois Coal Basin. • Laws that relate to mines in the Rocky Mountain Coal Region. • Laws in foreign countries that relate to mining subsidence. All subsidence references listed in appendix B were analyzed to determine their applicability to these five key subjects. If the reference was germane to one or more keywords , an attempt was made to obtain the article. If the arti- cle was obtained and selected for annota- tion, it was assessed and rated with respect to each key subject. Each reference was rated either S, G, or E to indicate its relevancy in the specific area (key subject). The rat- ing S signifies a satisfactory refer- ence that contains general information of limited scope. A rating of G indi- cates a good reference that contains a full breadth of information on the given subject but lacks specific information. A rating of E indicates an excellent reference because it contains specific, comprehensive information. The absence of a rating indicates that the reference does not pertain to that key subject. AVAILABILITY OF INFORMATION Prior to the Surface Mining Control and Reclamation Act of 1977 (Public Law 95- 87) , there was limited concern in the United States about the problem of mine subsidence. Thus, subsidence research for U.S. mining conditions was limited. In contrast, European mining engineers were greatly concerned with mine subsid- ence because of high population densities that increased the probability of damage to surface structures. Therefore, most state-of-the-art subsidence technology is derived from European experience. How- ever, it is not known how much, if any, of this foreign technology is applicable to U.S. conditions, and information that does apply might be difficult to obtain. Good sources of subsidence information in the United States are colleges and universities with mining departments, and a few State and Federal agencies. Federal agencies that might have subsid- ence information include mining-research and mining-regulatory agencies , such as the Bureau of Mines, the U.S. Department of Energy, the U.S. Geological Survey, and the Office of Surface Mining Reclama- tion and Enforcement. State agencies that may have access to subsidence infor- mation include State mining and geologi- cal surveys. In addition, the articles annotated in appendix A are available for consultation at the Denver (CO) Research Center. Based on the number of subsidence arti- cles published since 1977, the amount of subsidence research being performed in the United States has increased dramat- ically, and there will no doubt be a fur- ther concentration of research on this subject in the future. •3 C cu (X cx to C 3 o o CO d) cj s cu O) U-l 0) !-J 0) o c 0) •H CO XI a co ■3 0) •u O 0> rH 01 CO bO 3 •H 4-1 Ct) U T3 3 3 s o •H 4J co N T-t u o bO cu 4J CO o W J pq < -4t CNJ eg csi CNJ oo I I I I I I w w W Ed I I I I I I I w I I I I I I I I I I I f o w w w o u w o t I W I W I w w w I I I I I I I I O I I I I I I o I w I o I I Ed I I I I I I I I I ! I I I I I I I I I I I I I I t I w w w I I I I I I I I I I I I I I CO I I I I I III II III II I I I I III II o o o o o o I w w u o 4-1 CJ CO 4-> CO CO co •3 o o o o 4-1 c cu CD o X w w O I I I O I co co | I I I I CO O O o o o I I I o III II W W w I I III II O I I I III II C/3 1 I I III II I I I I o o o I I 3 % CD CJ CO l-l o, CO i Q -H a Pm -3 c 3 CD O > M O s • o • •H • bO • CU CI CO rH CO co pq o O rH CO s o CO O c o 1-1 DO CU Xi • • O -H C tO o O rH C •H CO 1-1 U ftr( it an CJ >4-l O M 3 3 M CO CU 00 • cO CO S-i •3 CU .. 4-> CU rH CO O CO & CO CJ MH vH CU U DO o 3 O to C0 rH <4H .£> O U 3^3 CO *o CO • J • O • (*! • H • Z • O • O . w l-i o cu Z O z M o H H Z o 2 CU M Ed 3 O to Z 3 DO CO Ed DO C CO C/l >4-l H 3 l-i § 4-> CU 3 DO 3 •H U-l O cfl . pq co C rH DO CO •H 4J DO CO o CU 4-1 g 3 "3 g 5. tH O &, • <: • j DO Ed 3 O •rl Z to w to • S 3 bO >%-H ^5 CU c •H co 4-1 C o o CO CO u c cu J-l CU cu 0) o e cu •H CO 3 co cu ■u CJ CU rH CU CO U-l o bO c •H 4J tfl C CO c o •rH 4-> CO N •H U O bO CU 4-1 CO o W iJ P9 < oo III II Ml l l 1 1 1 1 1 1 1 1 1 II III II II 1 O 1 III III 1 I 1 1 1 \0 II III II II 1 W 1 III III 1 1 1 1 1 II III II If 1 W 1 III III 1 1 1 1 1 II 1 W 1 O O II III III III lllll co II III CO I II COII CO | 1 III lllll CM CO 1 CO 1 1 II II III III III lllll ■— 1 COCO III II II III COCOCO CO CO 1 lllll o W W III II II III III III lllll CO II III II II III III III 1 O 1 1 1 co co II III II II 1 W 1 III III lllll II III II II III WWW O W O lllll CO II III II II III CO W O CO O 1 lllll IT) CO II III II II III W 1 CO O W 1 lllll -d- fO coco III II II III O O O O co co lllll CO CO II III It II 1 W 1 III III lllll CM CO WW III II II III III III lllll I— 1 CO II III II II Oil III III lllll o CO II III II II III III III W 1 1 1 o as CM OO III OO II IIO III III lllll 00 CM II III II II 1 W 1 III III lllll r-. CM II III II II 1 W 1 III III lllll CM II III II II OOI III III IIIIO I/O CM II III Ol Ol W 1 1 III III lllll CO o o ffi •• H 4J W C s % Ss cu o o M CO < H ,H • O O. ■ M CO i- Q -H CC Pi T- Pn T3 4J C 1- 3 a o > M O r— 4- C c N •i- f- c PC 1 o o C- • • • .• i • • o • • • • > • • -r-l • • • • > Ci • bO • • • • » O • CU • • • • » iH • p4 •• •• h J > bO • W •• • • O > l) (!H U •• • • P4 • pi t-1 CO co O S • cu • • S3 > rH CO O < •DO • • O > cfl pp G .eg • • O O C cu S • • « > UH-H J bOfO U • W > CO CO < CO "3 (Ui-iO c o <-> i-< s •• u m z ' cfloeas coojrHto-uw . ,C CO O H >H COO S M b ••0-HS. 3c03Oc0C!=>a ■H (J iH i! W1H fflHW stni: u an o oi-j^omo cOa^HO 3 3 3 l-i 3 t-i 4. O < H Bi J-iCOCOtJCOO P O 4J >, -H i-j co pa ss t» c 1- 1— 1- •1- u- c cC pq » • » • ! I o - • z . . M . . . o . . H . • M •• • • S3 ^ < > • O U ' > co a o ' > cu S < > i-l W W ' - 3 o cu - co Z C ' CO w < 01 Q bO • QMS. MiH C cu m u b. 03 O'H CO CO 4-> CC iw •HO) f-i CO 3 O co 2 P c •!- 4- CC r- r- « *J CT c H > • • • • • • 1 • • IS • > • • • • 1 • • > • • > • • • • • • . . . 4J • 4- e .. . e , X v- 3 CU JJ S tf> m d 3 CO 1 • » • » • . . bO W -co- > -H S3 - ' CO W < • CO Q ' CU H ' CJ CO < O PP < l-i l=> < Cu CO . U i— CO « 4-1 l-i "CO CU Q T3 CU » • • • • > • • • • . . . c • . . • o • • • • -H • > C • bO • . O • CU • « -H • pi • • bO • - CU C iH • • Pi -H CO • > CO o • >H giu • > co PP o c • U r-i 1-4 • CO CO • C O 4-> • tO O C • •d s * JJ CO o • O -H g C CO O bO ^H C kN -H CO -H ^ CU C iH O l-i ftH O O < H Pl h o u I I I I o o o o W W w w o o o o o o o o o I I I I I o o o I I I I O I I I I I I I I I I I I I I I I I I I I I III II III II U tfl I wow o w w w I I I I I I I w w I I III o o w w I I I I I I I I I O CO I I I I I C5 O (fi W W II o o I w III II I t-l o 4-> cj O cO CO co co III II w w III II I u co _ CO I I O O O O CO I I O O O co co O I I O W O CO CO T3 I o o _ o I I III I I u I I I I I I w o o I I I 4-t I s CD I I o III I I CD o _ X w I t I w III I w co i I I I I I w c a g Z 0) o o H cd H r-l c_> a H CO a -h § P-i T3 c M M a) o o > a u o s o •H bO CD C Pi -H CO iH CO cO pq o cd c o CO CJ •H X CO • • O iH 3 cd O O r-l 3 •i-l CO -H *j an (J an o l-l 3 Pi 3 W O H s < o o Pi • a) • bO • cO CO o z H erf o H • z • o co S CD M W 3 CJ> co Z CO W CD Q e h CO , JS 3 CD 4-> cr > cd Q H W M S 3 co 3 bO cO •H 4-1 CO CO CD 3 • aco CO 4-1 CO Q c o •H bO CD 3 Pi -H co .H CO CO PQ O O iH CO 3 O cO CJ c o •r( bO CD Pi ,3 co .H CJ 'H CO cO O M iH 3 CD CO -H •3 CX^H CD & .H W <3 M CO 4-) 3 3 £c bO jsi CD O M q o p3 w T3 CD 3 3 •H 4J 3 o c_> I I < X •H •3 3 CD Cu a ed s •H •3 a; c o o co d) o c cd S-i a) M-l CD CD o s ai •H CO J3 3 co •3 0) •u o ON III CO 1 II CO 1 CO I 1 1 1 H 1 1 1 in ON CO CO III CO 1 II III III III lllll o- On ii iii ii ii iii co e> a o i o iiiii ON a i iii ii ii iii iii iii iiiii CN] ON O O III II II III III III lllll 1 — 1 ON II III II II CD I i ll> III lllll o ON II III HI II III III III lllll ON 00 CO 1 III II II III III III lllll oo oo CO CO III II II III III III lllll oo II III II II co I i III III lllll 00 o e> iii h h ii ill ill iii oiiii oo UO III Ol II Oil III III lllll 00 II III II II III UUU III lllll en oo CO 1 III II II III III III lllll CM 00 HI III II II III III III lllll 1— 1 00 II III O 1 II 1 1 O III III lllll o 00 COCO IIO II II III OOO COCOCO lllll ON II III II II III 1 1 CO III lllll 00 II III II II III III III 1 H 1 1 1 r-- UOHII II II III III IIO lllll HI H co co || || III III III lllll m COCO III II II COII III III lllll ll III co i ii co i i ill ill lllll CO O O III II II III III III lllll CO a o rn .. H 4J H 3 S3 cd ^ e ' 25 CD • O u • M CO ■ H i-i < o ex . H CO r- Q rl It H H3 C « PU TJ 4J C V- 3 a o > u o cc 4. P C t\ T- t- c rr » •••H •• •• » O • CD • • • • < > >H • P5 •• ••i-J > bO • H •• • • O ' (UCr-IO •• • • P5 < aJ-HcO< •• ..h< » CO O 2 • CD • • 25 < > ■HCCU< 'bO ..O' > CO CO Q -CO • • O ' • O C CD . • < ' OiH-HJ bOrt U • W i • CO cfl < cOT3 HI M U • co4-)M .. 4-) a> 25 < cfl CJ 3 P5 n) -, -H hJ CO X g 1 • • • > • • 85 • > • • 1— 1 • > • • P5 • • • o • . . H • • M •• • • • 85 M • ' • • Q M • ' • co 2 o • < • cd 5 • ■ • M H 4J • C • 3 O d) • C • CO 85 3 • -f bO cfl H • 4- 3 CD Q bO • CC •H H C • i— i-l CO -H 3 i— H a) pQ M M K •rH Ot3 O -H 4-1 i*-i co co 4-> co a 4^ <4-l -rH CD C O l-i CQM CO 3 O PQ co 2 » • 1 • » • » • 1 • 1 • » • > • > • • 4 • 4 • • < 4-> < c •• . CD bO Cf B C *C ftrl c •H >,£ 3 CD 4J W > CD H M S 3 co » • • » • • I • • I • • • • 1 • • 1 • • . . . s ■ . . <; > • . J > • • • • bO H '•CO > • •!-( 85 ' • CO H • CO Q • CD M < 4J CJ CO . c o ta < cu u o • d cu co • Cu i— •H CO CC 3 4J i- cr co cu H Q X CD H » • • • • • • • • . . . c • . . . o • > • • -H • • 3 • bO • . O • CD • • iH . p4 • • bO • • ' 11 CH • • pi i-l cO • • CO o • ■ H mo • • co pq • O 3 • 'OHiH • cO cO • 3 O 4-i • cO O 3 • •H 3 . X «1 O • O -H 2 3 CO O bO iH 3 ^ -r-t cO i-l ^! CD D.H U h CX i-l O o H CO CJ CO Q) "+H iH >J U h a to a 4-1 H-l CO o u ja 3 3 3 1-1 CO CO T3 CO 4-1 >-, CO 3C o> bO O O CO o u U 3 • CO • O" • In • 3 • to bO tfl 3 0> o 2: h-l BS o H M •• 2 A! o u S O & W 4-> CJ 1) I 01 CO "O -H O "4-1 CO ^ <4-l CJ M CO 3 PQ CO 3 iH bfl CO •H 4J to co 0) £ Q H bO co 3 T3 ■H O S^-3 0) -U > OJ u X 3 CO 4-1 c a. •H CO 3 4-> cr co W Q • < • (J bO W 3 CJ •H 2 CO W CO P 0> u o CO BQ in S3 Oh CO • 3 • • o • • -H • • bO • • O" 3 • C*h -H • co • H Ij • co m • o • OH co • 3 O • flu • T-t • si to rH CJ -H CO co O U r-i C 0) CO -H X) &.-H d an W • P4 • • r-t • cO • o • a ♦ • c • ■H * CO • 4-J • c • 3 • O • s c bO t^-H ^ 0) o u o o rt w • 3 • O 10 13 CO 1 i I 1 1 1 1 1—1 CN CO en co I co i 1 1 1 1 1 1 1 i 1 1 I i 1 I w 1 •— ( 1— 1 CO W W 1 1 1 1 1 CO CO 1 1 1 i 1 1 I I 1 1 1 1 I— 1 o CO CO O 1 1 1 1 1 1 1 1 1 1 i 1 1 i I 1 1 1 1 i-H ON CN 1 1 1 1 1 1 1 1 1 co i 1 i 1 1 I I i 1 1 1 1— 1 CO CN co O I 1 1 o CO 1 1 1 1 1 I 1 1 I co 1 1 1 1 1 — 1 r-~ CN 1 1 1 1 1 1 1 1 1 1 1 CO CO CO 1 CO 1 1 1 1 1 rH >J3 CN O 1 1 1 1 1 1 1 1 1 1 1 I 1 1 1 1 1 1 1 1 1 — 1 I/O CN] O 1 1 1 1 1 1 1 1 1 1 1 i 1 1 1 1 1 1 1 1 i-H o- CN co o 1 1 1 1 1 1 CO 1 1 1 i 1 1 1 1 1 1 1 1 1 — 1 CO CN] 1 1 1 1 1 1 1 1 CO 1 1 1 I 1 1 1 1 1 1 1 1 — ' CN CN o o 1 1 1 1 1 1 1 1 1 1 l 1 1 1 1 1 1 1 1 r- 1 1— 1 CN 1 1 1 1 1 1 1 1 1 1 1 1 l 1 1 1 1 1 1 I W 1 i — t > m • • e ► • . . o • • • vH > • • • • • • 3 i • a • do CO O • O • CU z •H CO » • ■H • Pi • • • • H-l • i • H i • • • • • 3 • bo o ► • DO • w • • • • o • i • oi ► • i • • • o • cu o • 11 CH co • • • • a! • i • o » • * • • s • -H • Pi Sd •• • pi -H CO • • • • H • * • H l • • • • < • M • H w • CO o S • CU • • 2 • i • H ■• ► • i • • hJ • cu 3 r-t w 3 i • H H)U • > • • • oi •H 3 s • o M > • • • bO W • CO O i • O 3 cu Ft • • • > co X o • » • 3 co • i-H 3 CO z cu ► • Orlrl yA on CO M • W • . CU S • » •H z • CO M o o • CO CO < crt 13 cu u CO • u w ■u 3 > • CO w • O 3 H CD • d o w H n • • w cu 2 • 3 u cu O • CO a • o <-! •rl H iH i-H cO CO C Cti cfl 0) .-1 crt 4-1 w • CO z 3 •H • cu H • 3 3 CJ CX cd •H 3 w • • 13 CJ CO !3 cfl o 3 b 3 cfl w 4-> 4- 4J CJ CO • 3 O 4-t H CO rH 4-> 43 CO O H ^H CO CJ S H bo p CU Q bO CO e 3 o PQ • CO CO 3 P •H cO 3 . . CJ -H g • -H 3 W n o o c CO O ^■j U CJ U bO CJ 13 cfl CO i— CO •H c rH F 3 X n CO, CO • J3 CO O 2 •rl N o rH 3 ^ 3 CO 3 O cO 3 3J cu i — CU m M b ) CO e u -H c a rH CJ •H SI 3* PM 13 4J -H •H CO vH 4,X •H CO cO cO o DC 3 ^ u 4-1 a. in o o u J3 O u O 4- CO CO 4J CC CO f- CU 4J 3 4-1 rl rH 3 >-. •rl 3 cu o CO Cu rH O 3 3 3 M 3 M CU M 4-1 •H a 3 c * > a cr cO CU CO •H M CU > 33 CJ i ii i i o ill ill iiiii II III 11 II 1 W 1 III III lllll CNI II III II 1 O III III III lllll i — 1 i— i UO IUI col II III III III lllll o U O III II II III III III lllll r— 1 II III WO II III III III lllll CO m II III II coco ill ill 1 co i lllll in i— i O U III II II III III III lllll II III II II 1 W 1 III III lllll • o 4J u CO CO •1-1 ■u cO CO in in II III II II III III III 1 W 1 1 1 m ■—i WW III II II III III III lllll m — < II til II It III COCOCO 1 1 CO lllll m O 1 III II II III III III lllll CO m — i COCO III COI II CO 1 CO III III lllll • X) o o o o m II III II II CO 1 1 III III lllll i—i COCO III II II coil III coil lllll o 00 II III II II Oil III III lllll • 4-> c CD rH rH CD CJ X w —i II III II II coil O CO CO III lllll r— 1 COCO III COCO II COII III III lllll m II III II II III III III 1 1 1 W 1 w co < Q o - EC •• H 4J W d g g z u o r— cc 4- c c tv T- V- c s . . . O ' • • T-l • d • bO o • 06 t-I rt <2 ' w o S « i-H tfl U < > to pq Q o d a UH vl J b ' to to < ct . 3 O 4J h-l g to O 3 04 tc •H 3 W •• t: £ 9) OHH .. U rl S < <« i C to O S 1j c o , 3 a ■H tO 1-1 ^ 4-> <4- w o-^h o y t- tO CXiH O 3 5 0< HBl U V O 4J ►J co » • • m < • • • ij < i • • • o I ■ • • Q^ i • • • H . < 1- • • • • > • • 1— 1 • • . > • • prf • • » • • O • • > • • H • • , . . 1— 1 •• • • > • • z ^ • • > • • o u • • ' • CD S O • • > . a> s • • < > • >-i W J-> • c < > • 3 o a) • o • > • co Z d • t-l . bO tO W • 4J 4- OCfUQbO • tO C •H S M 3 • rH a rH CO T-l C iH E t-i a; pq u bo to c •H O & O -H 4J t- 14-1 tO CO JJ CD CD S ^t i4-i -h a) C c O t-i 3 Q M W tfl 3 O pq co S I ••• * 9 • £ • > ••• * c! * bO * » ••• • o • CD • » • • • ^ • bO • • > ■ • • h5 • J) C r- 1 • > ••• • P5 -H CO • > ••bOW« coo* ' • ■ fiO «H (O < i •••HZ'cOW • ' ••coW'O 3* > • • CO Q • O H rl ■ > ••CUM* CfltO* • 4-ioco • d o 4-1 • .. *dopq *cood • bo n v M 3 • *h 3* Cxi g aw *xtoo • U-HOO, iH O T-l S! d >,J2T-It0 tfltflO bO * t-l f>0)crcfl 3 o ?0 Q- o Q o cd n Q_ CD 3 -*• Q 3 o -♦■ c -i 3 -*• o Q o c Q i (/> O in _. 3- 3 TJ 3" l/l 3 Q Q —4- CD Q_ 3 (H o 3 tQ ^7 Q -^ Q_ n (D 3 (/> a cd Q • <£> CD n ■n -+ CD < n (/> £o 31 > $ C m ,„ m C/) 00 C *■ *§(!, Oo C m p2 C $ mo -<> 2 r < - < m 2 > Z m Z C « O m > li "n co x ^ m zco H m o > z m O c > r- o TJ TJ O 33 C Z H -< m O -< m 3) c en > 0> S*! s ° - m m 5 z > i o o o> "n -n H m I m m co 5 f 5 £ m O jg O 31 ^' 0" ^ * V cO" * V A° A \o^> y.^\ '^*- \A£' 4 o. 3,0 -VN A°* ' o . S •a." *«<■ 4P ^I*°*. ^ . . V .^^'^ 1 ^.^ A V ^6. G^ >». «^ °Xv o^ * A V *^ A G^.c^r.^o ^- v of .°*v\ < >• ^ Jk * » • * *i ^ , *o* iV' _ » « /, 1^ ^ % r . s • • .0* •♦• A <^ -"v"7. s * g^ <>, *o.»* A <. ' ^. A^* * A^ ^ V^ f >* °^**^V V^V ^^' o> \ > ♦ A>^ - %s W *oV" Jv* A>^ ■> **<& ».i* ^ » ^ \ L^ ^ X ,5°^ o, * • a •