Cork insulation; a complete illustrated textbook on cork insulation ...

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390 CORK INSULATION cream manufacturer to service or ice his cabinets in retail stores twice daily. In an effort to cut this expensive service to one daily icing, the Rieck ice cream interests, of Pittsburgh, Pennsylvania, undertook experiments wîth ice cream cabinets insulated with sheets of pure corkboard, an <strong>insulation</strong> specifi- cation for retail ice cream cabinets almost unheard of up to that time (about 1912), and an extravagance thought to be wholly unjustified. The experiments started with cabinets FIG. 184.—MODERN' CORK INSULATED ICE CREAM SHIPPING CONTAIN- ER; REPLACES ICE PACKED TUB. containing one inch thick corkboard, which thickness was then increased little by little until satisfactory results were obtained, in conjunction with the use of a suitable ice and salt mixture. The results of these experiments did much to establish pure corkboard as the standard <strong>insulation</strong> for retail ice cream cabinets, and it has so remained, the only improvement being in the methods followed in putting the corkboard in place and in an economical distribution throughout the cabinet of the thickness of corkboard used. In general, the details of cabinet assembly, with respect to <strong>insulation</strong>, should be predicated on a thorough understanding of the basic principles pertain-
CORKBOARD ICE CREAM CABINET 391 ing to the <strong>insulation</strong> of walls and structures to be subjected to low temperatures, as previously elaborated in this text, to the end that ice cream cabinets may contain adequate insulation installed so as to insure permanent cabinet efficiency. 160.—Mechanical Ice Cream Cabinets.—The trend in the development and applications of mechanical refrigerating- ma- chinery was slowly but constantly from large many-ton plants toward smaller units, much as in the development of electric power the large-motor main-shaft drive gave way a little at a time to individual drive by small motors. But the high pressures at which ammonia compression refrigerating ma- chines operate, placed restrictions on the smallness, the light- ness, and the cost of production of the ammonia units of fractional-ton capacity, past which it was not practical for the manufacturer to go. And that minimum cost was too high for general application to small refrigeration duty, such as the cooling of household refrigerators and retail ice cream cabinets, when in competition with ice, and ice and salt mixtures. The use of a refrigerant that could be effectively operated at relatively low pressures, such as sulphur dioxide, proved to be the solution of the problem, which development estab- lished the small fractional-ton refrigerating machine as a practical and economical refrigerating unit through much lighter and simpler construction and greatly reduced cost. However, in the practical application of such household refrigerating units, as they quickly came to be known, it was determined that their successful operation, as well as their low manufacturing cost, depended on a certain restriction of the unit refrigerating capacity. Thus the efforts to reduce the cost of production of the fractional-ton ammonia compression machine to the point of successful competition with ice and salt mixtures were, m general, unsuccessful; while the efforts to economically raise the unit refrigerating capacity of the sulphur dioxide type of machine enough to handle the heavier duty cabinets were, in general, unavailing. But virtually by the simple expedient of increasing the thickness of the corkboard <strong>insulation</strong> in ice cream cabinets to be mechanically cooled, and by so setting
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ôofeâ- 1842.4 This book may be ke
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Cork Insulation A
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To the Memory of JAMES EDWARD QUIGL
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tion of cork to other and more remo
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viii TABLE OF CONTENTS CHAPTER VI.
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X TABLE OF CONTENTS CHAPTER XIII. C
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xii TABLE OF CONTENTS CHAPTER XVIII
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2 CORK INSULATION floats for nets,
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CORK INSULATION vfany attem])ts lia
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6 CORK INSULATION •^ 4.—Home of
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8 CORK INSULATION and fifty feet an
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CHAPTER II. CORK STRIPPING. 6.—Re
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12 CORK INSULATION the cork oak tre
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14 CORK INSULATION seasoning prelim
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CHAPTER III. USES OF CORKWOOD AND U
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S CORK INSULATION 12.—Importance
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20 CORK INSULATION usually scraped,
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22 CORK INSULATION ful utilization
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24 CORK INSULATION from capillarity
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26 CORK INSULATION in place and spi
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28 CORK INSULATION for cold storage
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30 CORK INSULATION very substantial
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Z2 CORK INSULATION came The Nonpare
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34 CORK INSULATION glass bottle, al
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36 CORK INSULATION merit and an eff
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38 CORK INSULATION Paragraph 340.
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40 CORK INSULATION turning those st
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42 CORK INSULATION tip
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44 CORK INSULATION IMPORTS INTO UNI
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46 CORK INSULATION IMPORTS INTO UNI
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IMPORTS INTO UNITED STATES CORK INS
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so CORK INSULATION IMPORTS INTO UNI
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52 CORK INSULATION < i 2
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54 CORK INSULATION
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56 CORK INSULATION
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58 CORK INSULATION IMPORTS ENTERED
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70 CORK INSULATION O" coo I lOiM <
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72 CORK INSULATION crease by its be
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74 CORK INSULATION the tube and mer
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76 CORK INSULATION cooled, the air
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78 CORK INSULATION ordinary pressur
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80 CORK INSULATION sion. If a subst
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CHAPTER VIII. MEASUREMENT OF HEAT,
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84 CORK INSULATION equal to unity,
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86 CORK INSULATION The heat of fusi
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88 CORK INSULATION vaporize, and wh
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90 CORK INSULATION a pressure of 35
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92 CORK INSULATION of such air at t
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94 CORK INSULATION RELATIVE HUMIDIT
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96 CORK INSULATION and the temperat
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98 CORK INSULATION perature of the
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100 CORK INSULATION INTERNAL THERMA
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102 CORK INSULATION usually classed
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104 CORK INSULATION lose by radiati
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106 CORK INSULATION age wall <stron
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108 CORK INSULATION It will be seen
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110 CORK INSULATION H=K A (.U—U)
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112 CORK INSULATION : equals 17917,
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114 CORK INSULATION convection, and
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116 CORK INSULATION metal boxes wit
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118 CORK INSULATION the test box wi
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120 CORK INSULATION the areas and t
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122 CORK INSULATION 79.—Tests by
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124 CORK INSULATION a narrow limit,
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126 CORK INSULATION In addition to
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128 CORK INSULATION applications we
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130 CORK INSULATION
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132 CORK INSULATION j;aii 03 O .O 2
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134 CORK INSULATION
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136 CORK INSULATION
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138 CORK INSULATION
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140 CORK INSULATION
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142 CORK INSULATION
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144 CORK INSULATION
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146 CORK INSULATION
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148 CORK INSULATION
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ISO CORK INSULATION ^ I CO « O :s
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152 CORK INSULATION
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154 CORK INSULATION
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156 CORK INSULATION o ffi K K a ,=5
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158 CORK INSULATION
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160 CORK INSULATION o ^ J W to
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162 CORK INSULATION
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164 CORK INSULATION
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166 CORK INSULATION Section XI of *
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168 CORK INSULATION capillarity, el
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170 CORK INSULATION conceivable min
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172 CORK INSULATION test consists o
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174 CORK INSULATION 85.—Convenien
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176 CORK INSULATION basement except
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CHAPTER XII. PROPER THICKNESS OF CO
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ISO CORK INSULATION i ness that wil
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182 CORK INSULATION that a small ch
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184 CORK INSULATION 91.—Proper Th
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186 CORK INSULATION license alone i
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188 CORK INSULATION In new structur
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190 CORK INSULATION ure, in closed-
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192 CORK INSULATION corner of the r
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194 CORK INSULATION should be rever
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196 CORK INSULATION cold storage ro
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198 CORK INSULATION In the early da
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200 CORK INSULATION Until comparati
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202 CORK INSULATION overcome obstac
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204 CORK INSULATION introducing pur
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206 CORK INSULATION Pure air is dif
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208 CORK INSULATION ing capacity. I
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210 CORK INSULATION A hard, repress
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212 CORK INSULATION storage room is
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216 CORK INSULATION joists of such
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218 CORK INSULATION and delicately
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220 CORK INSULATION slight variatio
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222 CORK INSULATION filler and then
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224 CORK INSULATION ating less heat
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226 CORK INSULATION The first petro
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228 CORK INSULATION to be used in a
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230 CORK INSULATION Flash Point is
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232 CORK INSULATION A suitable Asph
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234 CORK INSULATION enveloping memb
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236 CORK INSULATION fying agent, on
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238 CORK INSULATION at 105° C. The
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CHAPTER XIII. COMPLETE SPECIFICATIO
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242 CORK INSULATION 116.—Finish.
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244 CORK INSULATION a second layer
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246 CORK INSULATION one layer of ..
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248 CORK INSULATION CE/LING :-)::):
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250 CORK INSULATION into which cork
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252 CORK INSULATION 106.—Ceilings
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254 CORK INSULATION insulated, one
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256 CORK INSULATION compounds.* The
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258 CORK INSULATION to all joints i
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260 CORK INSULATION »
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262 CORK INSULATION 110.—Floors.
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264 CORK INSULATION the size of the
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266 CORK INSULATION Asphalt cement.
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268 CORK INSULATION shall then be e
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270 CORK INSULATION To the reasonab
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272 CORK INSULATION butted tight, a
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274 CORK INSULATION mixed one part
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276 CORK INSULATION consisting of .
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278 CORK INSULATION of . . .-inch p
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280 CORK INSULATION sand* for each
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282 CORK INSULATION To prepare Asph
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284 CORK INSULATION must be applied
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286 CORK INSULATION plied, and the
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288 CORK INSULATION 122.—Second L
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290 CORK INSULATION 124.—First La
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292 CORK INSULATION that the forms
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294 CORK INSULATION and all joints
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296 CORK INSULATION Break all joint
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298 CORK INSULATION board uncoated
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300 CORK INSULATION area (one face
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302 CORK INSULATION [ storage doors
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3(X CORK INSULATION surface*, and t
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506 CORK INSULATION floor, on a lev
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308 CORK INSULATION See that the fi
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310 CORK INSULATION line of the fla
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312 CORK INSULATION corkboards are
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314 CORK INSULATION mixed product*,
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316 CORK INSULATION floors and baff
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318 CORK INSULATION History also sh
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320 CORK INSULATION into natural ic
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322 CORK INSULATION them from freez
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324 CORK INSULATION smaller establi
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326 CORK INSULATION on the "Mechani
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328 CORK INSULATION the four walls
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330 CORK INSULATION load on the ref
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CHAPTER XVI. DEVELOPMENT OF THE COR
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334 CORK INSULATION "root house," t
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336 CORK INSULATION of the surround
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338 CORK INSULATION to a new positi
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Page 356 and 357: 342 CORK INSULATION Nevertheless, t
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Page 366 and 367: 352 CORK INSULATION success, and su
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Page 372 and 373: 358 CORK INSULATION Handles and Cor
Page 374 and 375: 360 CORK INSULATION models, for ice
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Page 390 and 391: 376 CORK INSULATION COPELAND "DEPEN
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Page 394 and 395: 380 CORK INSULATION j Household ref
Page 396 and 397: 382 CORK INSULATION at the daily ex
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Page 400 and 401: CHAPTER XVII. DEVELOPMENT OF THE CO
Page 402 and 403: 388 CORK INSULATION and practices p
Page 406 and 407: 392 CORK INSULATION the ins
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Page 410 and 411: 396 CORK INSULATION dumping of the
Page 412 and 413: 398 CORK INSULATION The Machine.—
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Page 418 and 419: 404 CORK INSULATION Modern Mechanic
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Page 422 and 423: 408 CORK INSULATION oning millions
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Page 432 and 433: 418 CORK INSULATION made to take si
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Page 436 and 437: 422 CORK INSULATION The bottom lini
Page 438 and 439: 424 CORK INSULATION Covers for Juni
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Page 446 and 447: 432 CORK INSULATION CHART IV The we
Page 448 and 449: 434 CORK INSULATION That precooling
Page 450 and 451: 436 CORK INSULATION Mr. President,
Page 452 and 453: 438 CORK INSULATION the elimination
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440 CORK INSULATION Now let me proc
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442 CORK INSULATION of the eggs on
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444 CORK INSULATION It may be said
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446 CORK INSULATION occur. Salting
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448 CORK INSULATION the two inches
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450 CORK INSULATION ables as anythi
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452 CORK INSULATION We are continui
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454 CORK INSULATION Our object was
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456 CORK INSULATION As air circulat
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458 CORK INSULATION ers and cross s
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460 CORK INSULATION States standard
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462 CORK INSULATION temperature and
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464 CORK INSULATION CORK PAINT.* Fo
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466 CORK INSULATION strengthening c
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468 CORK INSULATION only 0.38; that
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470 CORK INSULATION
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472 CORK INSULATION possible throug
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474 CORK INSULATION ing and heating
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476 CORK INSULATION that for each o
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478 CORK INSULATION case of other g
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480 CORK INSULATION because it will
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482 CORK INSULATION ECONOMY OF GASO
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484 CORK INSULATION That this amoun
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486 CORK INSULATION form on walls a
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488 CORK INSULATION Practically all
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490 CORK INSULATION for the pebbles
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492 CORK INSULATION nailed to three
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494 CORK INSULATION QUANTITIES OF C
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496 CORK INSULATION EXAMPLE OF PURC
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498 CORK INSULATION Portland cement
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500 CORK INSULATION FREIGHT CLASSIF
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502 CORK INSULATION CORK PIPE COVER
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504 CORK INSULATION to give a bette
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506 CORK INSULATION 3. Ice Water Th
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508 CORK INSULATION brought tightly
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510 CORK INSULATION A GOOD DRINK OF
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512 CORK INSULATION The Cost and th
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514 CORK INSULATION cause the agree
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516 CORK INSULATION Legality— In
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518 CORK INSULATION In general, unl
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520 CORK INSULATION the work should
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522 CORK INSULATION (1) Page $8, pa
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524 CORK INSULATION Brooks ice crea
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526 Page Depreciation in efficiency
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528 CORK INSULATION test of asphalt
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530 CORK INSULATION ice, formation
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532 Page Sealed air cells 169 Seali
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534 CORK INSULATION Page of heat by
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GOOD BOOKS YOU SHOULD HAVE These ar
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DATE DUE
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