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This category has the following 5 subcategories, out of 5 total.
145:
The following 11 pages are in this category, out of 11 total.
172:Construction of the Cheyenne Mountain Complex
8:
142:Pages in category "Underground construction"
220:National Audio-Visual Conservation Center
147:This list may not reflect recent changes
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109:Underground construction companies
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196:Iranian underground missile bases
208:Las Vegas Convention Center Loop
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184:Fordow Fuel Enrichment Plant
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16:The main article for this
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249:Underground construction
23:Underground construction
288:Subterranea (geography)
225:Nuclear program of Iran
72:Trenchless technology
254:Underground hospital
237:Project Greek Island
126:Underground hangars
89:Tunnel construction
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278:Construction
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93:(1 C, 27 P)
272:Categories
130:(1 C, 2 P)
56:(2 C, 2 P)
18:category
160:Big Dig
76:(13 P)
113:(2 P)
20:is
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244:U
232:P
215:N
203:L
191:I
179:F
167:C
155:B
102:U
65:T
41:N
26:.
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.