1898 - Coalmininghistorypa.org

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344 REPORT OF THE BUREAU OF MINES. Off. Doc.In the following table will be found u summaiy of the statisticsgathered from the official returns sent to this office by the coal companiesof the district for the year:
No. 11. THIRD BITUMINOUS DISTRICT. 345Moditiciilioii of the Single Entry System of Extraelinj;;- the Coal Seamsand the Adoption of Fans Instead of Furnaces for VentilatingPurposes.As a necessai-y evil, tlie single entry system of extracting the coalseam has been adopted at a very large number of the mines in thisdistrict. Its sujtposed cheaimess has been (he great considerationin favor of the adojition of this system and no amount of argunu'ntadvanced to disi>r()ve of this eri-oneous method seems to have mucheffect on the mine managers who cling to the old nu^hods of theirforefathers, rather than fall in with the moic modern and economicones. If this system cannot be eliminated entirely, tlien the nextbest plan would be to oHer some suggestions relative to its modificationor imi)ro\('nient.1st. I would saggiest that wherever the single entry plan has beenadopted, that the entry be driven to its boundary line, followed withan air course, befoie any rooms are allowed to be turned tlierefrom.This work being completed, then begin atthe boundar^^ line to extractall of the coal by sections worked on the retreating system.This can be done either by the pillar and room method, oi' by a modificationof the long wall plan. Ky the adoption of this methodscpieezes would be avoided and efficient ventilation maintained atthe face of the workings.2d. If the above method was too long a st(^p to take for a beginning,they could uu)dify the |)lau and still make a gr^Nit improvement on thepresent one, as follows: Drive the entry with a solid air course on oneside of it as before mentioned, making cut throughs no oftener thanthe extreme limit of the law (as to distance) required, having saidcut throughs so i)laced as to serve the purpose of a room neck whenthe coal would be taken from that side. As the entry w as advancingturn rooms on one side of it only. Before turning any rooms, drive theentry at least one hundred feet. The rooms turned off' the entryshould be driven in couplets or 'triplets, that is, the entry pillarshould only be cutat such distances apart as to serve the purposeof a room neck and as an exit for the wagons to the eiitr}- for thesegroups of rooms, instead of cutting the entry pillar so many timesor making a neck for each room. By this method the entry pillarwould be strengthened very materially, thus avoiding annoying andexpensive scpu'ezes and insuring a greater îllars would have to be determined by the surioundingnatural conditions. After the coal had all been worked out on theone side of the entry, then the other side could be attacked beginningat the boiindiiiy line and working on the retreating system inlimitedsections until all of the coal was secured. This modification of thesingle entry svstem has in a limited way been tried and it has proven
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^>y^^^2^^^^The lAhtaryci^^:^'=^Y^^^
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Official Document, No. 11.REPORTBUR
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Official Document, No. 11.LETTER OF
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Official Documiont, No. 11.CONTENTS
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Official Document, No. 11.ANNUAL RE
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No. 11. BUREAU OF MINES. ixhas been
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No. 11. BUREAU OF MINES. xitli( iia
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No. 11. BUREAU OF MINES. xiiirespon
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No. 11. BUREAU OF MINES. xvparallel
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No. 11. BUREAU OF MINES. xviithe lo
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No. 11. BUREAU OF MINES. xixThese a
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Coking Pnrrss
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xxii ANNUAL, REPORT OF THE Off. Doc
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xxiv ANNUAL REPORT OF THE Off. Doc.
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IxviANNUAL REPORT OF THEOff.DExpens
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Ixxxii ANNUAL REPORT OF THE Off. Do
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( Ixxxiv )
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G/?OSS TONS M/NED, /1ND THE! NUMBER
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NUMBER OF NET TONS M/NED, /?NO T'OU
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( Ixxxvi )
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'^-^'^^"i MINING LAWS OF PENNSYLVAN
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^'^ MINING LAWS OF PENNSYLVANIA. Of
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xcii MINING LAWS OF PENNSYLVANIA. O
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xciv MINING LAWS OF PENNSYLVANIA. O
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kcvi MINING LAWS OF PENNSYLVANIA. O
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Xcviii MINING LAWS OF PENNSYLVANIA.
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c MINING LAWS OP PENNSYLVANIA. Off.
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cii MINING LAWS OF PENNSYLVANIA. Of
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civ MINING LAWS OF PENNSYLVANIA. Of
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cvi MINING LAWS OF PENNSYLVANIA. Of
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cviii MINING LAWS OF PENNSYLVANIA.
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ex MINING LAWS OF PENNSYLVANIA. Off
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cxii MINING LAWS OF PENNSYLVANIA. O
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cxiv MINING LAWS OF PENNSYLVANIA. O
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cxvi MINING LAWS OF PENNSYLVANIA. O
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cxviii MINING LAWS OF PENNSYLVANIA.
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cxx MINING LAWS OF PENNSYLVANIA. Of
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cxkil MINING LAWS OF PENNSYLVANIA.
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cxxiv MINING LAWS OF PENNSYLVANIA.
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cxxvi MINING LAWS OF PENNSYLVANIA.
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cxxviii MINING LAWS OF PENNSYLVANIA
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cxxx MINING LAWS OF PENNSYLVANIA. O
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cxxxii MINING LAWS OF PENNSYLVANIA.
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cxxxiv MINING LAWS OF PENNSYLVANIA.
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cxxxvl MINING LAWS OF PENNSYLVANIA.
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cxxxviii MINING LAWS OF PENNSYLVANI
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cxl MINING LAWS OF PENNSYLVANIA. Of
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cxlii MINING LAWS OF PENNSYLVANIA.
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cxliv MINING LAWS OF PENNSYLVANIA.
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cxlvi MINING LAWS OF PENNSYLVANIA.
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cxlviii MINING LAWS OF PENNSYLVANIA
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cl MINING LAWS OF PENNSYLVANIA. Off
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clii MINING 1.AWS OF PENNSYLVANIA.
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cliv MINING LAWS OF PENNSYLVANIA. O
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clvi MINING LAWS OF PENNSYLVANIA. O
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clviii MINING LAWS OF PENNSYLVANIA.
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clx MINING LAWS OF PENNSYLVANIA. Of
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clxil MINING LAWS OF PENNSYLVANIA.
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clxiv MINING LAWS OF PENNSYLVANIA.
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clxvi MINING LAWS OF PENNSYLVANIA.
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clxviii MINING LAWS OF PENNSYLVANIA
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( clxx )
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2 REPOItT OF THE BUREAU OF MINES. O
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REPORT OF THE BUREAU OF MINES.Off.
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.REPORT OF THE BUREAU OF MINES.Off.
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REPORT OP THE BUREAU OF MINES.Off.
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II10 REPORT OF THE BUREAU OF MINES.
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14 REPORT OF THE BUREAU OF MINES. O
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22 REPORT OF THE BUREATT OP MINES.
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2§ REPORT OF THE BUREAU OF MINES.
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34 REPORT Oy THE BITREAU OF MINES.
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38 REPOllT OF THE BUREAU OF MINES.
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S,• d40 REPORT OF THE BUREAU OF M
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48 REPORT OF THE BUREAU OP MINES. O
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50 ]'.EPORT OF THE BUREAU OF MINES.
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g2 REPORT OF THE liSTSPECTORS OP MI
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{ 66)
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'REPORT OF THE BUREAU OF MINES.Off.
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74 REPORT OF THF. BUREAU OF MINES.
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i76 REPORT OF THE BUREAU OF MINES.
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; I .'78 REPORT OF THE BUREAU OF MI
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: c : :•N •! 1-^ I II80 REPORT
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S6 REPORT OF THE BUREAU OF MINES. O
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100 REPORT OF THE BUREAU OF MINES.
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102 REPORT OF THE BUREAU OF MINES.
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No. 11. FOURTH ANTHRACITE DISTRICT.
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Official Document, No. 11.FIFTH ANT
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No. 11. FIFTH ANTHRACITE DISTRICT.
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1^0. 11. FIFTH ANTHRACITE DISTRICT.
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Mo. 11. tPIFTH ANTHRACITE DISTRICT.
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No. 11. FIFTH ANTHKACITE DISTRICT.
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. JohnNo. 11. FIFTH ANTHRACITE DIST
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-,Î1 o: E. -5 h> 1-3 ,_;d JlS> S t
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—No. 11. FIFTH ANTHRACITE DISTRIC
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I,• —-, 3':d;No. 11. FIFTH ANTH
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No. 11. tiÎFTH ANTHRACITE DISTRICT
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. cNo. 11. FIFTH ANTHRACITE DISTRIC
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Official Document, No. 11.Sixth Ant
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No. 11. SIXTH ANTHRACITE DISTRICT.
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'X5.0."No. 11. SIXTH ANTHRACITE DIS
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- - - --- 'ONo. 11. SIXTH ANTHRACIT
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•SNo. 11. SIXTH ANTHRACITE DISTRI
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No.Official Document, .11.SEVENTH A
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No. 11. SEVENTH ANTHRACITE DISTRICT
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0) (—No. 11. SEVENTH ANTHRACITE D
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No. 11. SEVENTH ANTiJItACJTE DISTRI
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c:cccc—No. 11. SEVENTH ANTHRACITE
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..iberland,..berland,..iberland,..b
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Official Document, No. 11.EIGHTH AN
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No. 11. EIGHTH ANTHRACITE DISTRICT.
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No. 11. EIGHTH ANTHRACITE DIg1:'RIC
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No. 11. EIGHTH ANTHRACITE DISTlilCT
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''L.No. 11. EIGHTH ANTHRACITE DISTR
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'^No. 11. EIGHTH ANTHRACITE DISTRIC
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No. 11. EIGHTH ANTHRACITE} DISTRICT
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No. 11. EK.itlTH ANTIIi;.\>, C£!~
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BlTUMIiUS MIIE DISTRICTS.( 269 )
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Official Document, ô. 11.FIRST BIT
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.No. 11. FIRST BITUMINOUS DISTRICT.
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No. 11. FIRST BITUMINOUS DISTRICT.
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No. 11. FIRST BITTTMINOTTS DISTRICT
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.>I-^•, c8No. 11, FIRST BITUMINOU
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Page 503 and 504: Official Document,"No. 11.Second Bi
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Page 513 and 514: No. n. SECOND BITUMINOUS DISTRICT.
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Page 529 and 530: No. 11, SECOND BITUMINOUS DISTRICT.
Page 539 and 540: 'No. 11. SECOND BITUMINOUS DISTRICT
Page 541: Official Document, No. 11.THIRD BIT
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Page 553 and 554: !. MI•No. n. THIRD BITUMINOUS DIS
Page 559 and 560: 3*No. 11. THIRD BITUMINOUS DISTRICT
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Page 565 and 566: Official Document, No. 1Fourth Bitu
Page 567 and 568: No. 11. FOURTH BITUMINOUS DISTRICT.
Page 575 and 576: No. 11. FOURTH BITUMINOUS DISTRICT
Page 581 and 582: iCO^:'K! ^: gNo. II. FOURTH BITUMIN
Page 583 and 584: Official Document, ]S'o. 11.Fifth B
Page 585 and 586: No. 11. FIFTH BITUMINOUS DISTRICT.
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No. 11. BÎFTH BITUMINOUS DISTRICT.
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No. 11. FIFTH BITUMINOUS DISTRICT.
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,3j(U(l>
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No. n. FIFTH BITUMINOUS DISTRICT. 4
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No. 11, FIFTH BITUMINOUS DISTRICT.
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-'^.^No. 11. FIFTH BITUMINOUS DISTR
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.KNo. 11. FIFTH BITUMINOUS DISTRICT
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Official Document, No. 11.Sixth Bit
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No. 11. SIXTH BITUMINOUS DISTRICT.
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„„„„„„„„. 3'r 2No.
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;.il!•No. 11. SIXTH BITUMINOUS DI
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—'- "No. 11. SIXTH BITUMINOUS DIS
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,"No. 11. SIXTH BITUMINOUS DISTRICT
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'I«; p.o'CNo. 11. SIXTH BITUMINOUS
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. c;—No. 11. SIXTH BITUMINOUS DIS
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Official Document, No. 11.SEMTH BIT
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No. 11. SEVENTH BITUMINOUS DISTRICT
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No. n. SEVENTH BITUMINOUS DISTRICT.
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No. 11. SEVENTH BITUMINOUS I51STRIC
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I.«CNo. 11. SEVENTH BITUMINOUS DIS
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NNo. 11. SEVENTH BITUMINOUS DISTRIC
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- -fcniSI; SNo. 11. SEVENTH BITUMIN
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)Official Document, No. 11.Eighth B
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No. 11. EIGHTH BITUMINOUS DISTRICT.
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No. 11. EIGHTH BTTTTMTNOTTS DISTRIC
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INo. 11. EIGHTH BITUMINOUS DISTRICT
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;No. 11. EIGHTH BITUMINOUS DISTRICT
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•7.;C^jNo. 11. EIGHTfl BITUMINOUS
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No, 11. EIGHTH BITUMINOUS DISTRICT.
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.ONo. 11. EIGHTH BITUMINOUS DISTRIC
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No. 11. EIGHTH BITUMINOUS DISTKICJV
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Official Document, No. 11.Ninth Bit
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No. 11. NINTH BTTlTMINOtlS DISTRICT
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No. 11. NINTH BITUMINOUS DISTRICT.
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c nj . - a;' :_- ::-'No. 11. NINTH
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,No. 11. NINTH BITUMINOUS DISTRICT.
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No. 11. Ninth bituminous district.
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'Official Document, No. 11.Tenth Bi
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No. 11. TENTH BITUMINOUS DISTRICT.
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(heNo. 11. TENTH BITUMINOUS DISTRIC
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i•C (No. 11. TENTH B[TUMINOUS DIS
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No. 11. TENTH BITUMINOUS DISTillCT.
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I!ONo. 11. TENTH BITUMINOUS DISTRIC
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;—JNo. ]1. TENTH BITUMINOUS DISTR
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Official Document, No. 11,INDEX.Pag
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No. 11. INDEX. 553Page.Table No. 1,
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No. 11. INDEX. 555Page.Fatal and no
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No. 11. INDEX. 557Page.Table No. :>
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REF TN805.P1A3 1898Report of the Bu
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