1 00:00:00,000 --> 00:00:00,000 2 00:00:05,940 --> 00:00:08,560 Mhm . Ladies and gentlemen , now I have 3 00:00:08,560 --> 00:00:12,330 your attention please . I am Sergeant 4 00:00:12,340 --> 00:00:15,560 Wimbush of the 3rd Infantry Regiment , 5 00:00:15,940 --> 00:00:19,110 United States Army commander of the 6 00:00:19,110 --> 00:00:22,380 relief home of the unknown soldier . 7 00:00:22,630 --> 00:00:24,700 The tomb of the unknown soldier in 8 00:00:24,710 --> 00:00:26,550 Arlington National Cemetery is 9 00:00:26,940 --> 00:00:28,996 Absoluteal one of the most important 10 00:00:29,030 --> 00:00:31,252 public monuments in the United States . 11 00:00:31,540 --> 00:00:34,420 And it is certainly the most important 12 00:00:34,420 --> 00:00:38,330 war memorial in our nation . It's 13 00:00:38,340 --> 00:00:42,110 critical that the authentic memorial , 14 00:00:42,200 --> 00:00:45,100 the original stone be preserved . I'm 15 00:00:45,110 --> 00:00:47,670 robert knee wig . I am the director of 16 00:00:47,670 --> 00:00:49,620 the Southern Field office at the 17 00:00:49,620 --> 00:00:51,176 National Trust for Historic 18 00:00:51,176 --> 00:00:53,231 Preservation . You know , the public 19 00:00:53,231 --> 00:00:55,760 has always cared about and loved the 20 00:00:55,760 --> 00:00:57,982 too many unknowns at Arlington National 21 00:00:57,982 --> 00:00:59,927 Cemetery from the time that it was 22 00:00:59,927 --> 00:01:03,480 commissioned and installed in the 1930s , 23 00:01:03,490 --> 00:01:06,260 this was a place where veterans , 24 00:01:06,270 --> 00:01:08,640 millions of veterans and their families 25 00:01:08,640 --> 00:01:12,320 have gone to pay respects . The process 26 00:01:12,320 --> 00:01:15,500 of preservation um would 27 00:01:15,630 --> 00:01:19,170 retain the original would protect the 28 00:01:19,170 --> 00:01:22,360 authentic memorial into the future . It 29 00:01:22,360 --> 00:01:26,160 has aged , it has cracked and it's that 30 00:01:26,540 --> 00:01:30,250 character , that historic character of 31 00:01:30,250 --> 00:01:33,300 the stone that we can and should 32 00:01:33,310 --> 00:01:36,410 preserve for future generations . If we 33 00:01:36,410 --> 00:01:38,900 lose that original stone , we lose the 34 00:01:38,900 --> 00:01:41,260 connection to the families and the 35 00:01:41,260 --> 00:01:44,960 veterans who installed it or 36 00:01:46,040 --> 00:01:48,600 I'm Colonel Tory precedes the Arlington 37 00:01:48,600 --> 00:01:50,990 National Cemetery engineer . This is 38 00:01:50,990 --> 00:01:53,820 important because we had some work done 39 00:01:53,930 --> 00:01:56,041 on the tomb of the unknown and within 40 00:01:56,041 --> 00:01:58,263 the last year the work that was done in 41 00:01:58,263 --> 00:02:00,690 the field that was used wasn't the 42 00:02:00,690 --> 00:02:03,020 proper chemical mixture and didn't hold 43 00:02:03,030 --> 00:02:05,030 the way that we would have hoped it 44 00:02:05,030 --> 00:02:07,430 would have in order to completely seal 45 00:02:07,430 --> 00:02:09,541 the crack so that no further moisture 46 00:02:09,541 --> 00:02:11,708 and no further cracking would happen . 47 00:02:11,708 --> 00:02:14,770 So now we brought back the contractor 48 00:02:14,770 --> 00:02:17,020 as well as we've invited a host of 49 00:02:17,020 --> 00:02:19,160 experts to help us do this the right 50 00:02:19,160 --> 00:02:21,327 way . And it's important that we do it 51 00:02:21,327 --> 00:02:23,438 during the month of september because 52 00:02:23,438 --> 00:02:25,549 it provides us the right temperatures 53 00:02:25,549 --> 00:02:27,771 in terms of the weather and in terms of 54 00:02:27,771 --> 00:02:29,993 the marble temperature itself , this is 55 00:02:29,993 --> 00:02:33,550 the nation's grave site and the 56 00:02:33,560 --> 00:02:36,680 vision for is for us to preserve it as 57 00:02:36,680 --> 00:02:38,990 long as we can in the original state 58 00:02:39,000 --> 00:02:41,260 that it is in . We want to get into a 59 00:02:41,260 --> 00:02:43,316 habit of maintaining what we've been 60 00:02:43,316 --> 00:02:45,371 entrusted with . Not just getting to 61 00:02:45,371 --> 00:02:47,230 the point of of the catastrophic 62 00:02:47,230 --> 00:02:49,174 failure before we do something and 63 00:02:49,174 --> 00:02:51,341 that's the mindset that we're changing 64 00:02:51,341 --> 00:02:53,563 here , is that we've got to keep things 65 00:02:53,563 --> 00:02:53,450 on a maintenance schedule and that 66 00:02:53,450 --> 00:02:55,283 includes the tomb of the unknown 67 00:02:55,283 --> 00:02:55,060 soldier . 68 00:03:02,240 --> 00:03:06,040 Yeah , there is a 69 00:03:06,040 --> 00:03:09,370 crack that runs through and actually 70 00:03:09,370 --> 00:03:11,770 two cracks that run through the main 71 00:03:11,780 --> 00:03:15,310 sculpted stone of the tomb And they 72 00:03:15,310 --> 00:03:17,900 need to be filled so that water and 73 00:03:17,900 --> 00:03:21,090 bugs and dirt don't get into them . Uh 74 00:03:21,100 --> 00:03:23,290 my name is Amy Hollis and I'm the 75 00:03:23,300 --> 00:03:26,730 conservator for Mr Eisenberg and I am 76 00:03:26,730 --> 00:03:28,710 the superintendent on site for the 77 00:03:28,710 --> 00:03:31,210 works . The previous repair done in 78 00:03:31,210 --> 00:03:34,460 spring of 2010 um 79 00:03:34,940 --> 00:03:37,990 failed within a few months . It started 80 00:03:37,990 --> 00:03:40,150 to powder and fallout and there were 81 00:03:40,150 --> 00:03:43,030 some technical problems with the mix 82 00:03:43,040 --> 00:03:46,640 and how it cured in the stone . So 83 00:03:46,640 --> 00:03:49,250 we're going back with a new formula , 84 00:03:49,940 --> 00:03:52,420 there's a binder component and an 85 00:03:52,420 --> 00:03:55,150 aggregate component to the fill in the 86 00:03:55,150 --> 00:03:58,740 crack and the binder consists of lime 87 00:03:58,750 --> 00:04:01,790 and Portland cement and that's 88 00:04:01,800 --> 00:04:04,390 essentially the glue that holds the 89 00:04:04,390 --> 00:04:07,880 repair together . The aggregate is the 90 00:04:07,880 --> 00:04:10,220 crushed marble that we're using in the 91 00:04:10,220 --> 00:04:12,440 crack that is going to simulate the 92 00:04:12,440 --> 00:04:14,440 face of the stone and also keep the 93 00:04:14,440 --> 00:04:16,900 repair from shrinking and falling out 94 00:04:16,910 --> 00:04:19,000 using , using a crushed marble 95 00:04:19,000 --> 00:04:22,760 aggregate is going to act 96 00:04:23,540 --> 00:04:25,762 like the stone that's already there and 97 00:04:25,762 --> 00:04:27,984 you're going to be able to see it , the 98 00:04:27,984 --> 00:04:30,040 light will play off of it a lot like 99 00:04:30,040 --> 00:04:32,450 the stone that , that's there . This 100 00:04:32,450 --> 00:04:35,110 stone actually is in really good shape 101 00:04:35,120 --> 00:04:37,700 except for the crack . This particular 102 00:04:37,710 --> 00:04:40,070 crack is kind of an anomaly in the 103 00:04:40,070 --> 00:04:43,860 stone and it's not known exactly how 104 00:04:43,860 --> 00:04:45,971 this crack came about , but there's a 105 00:04:45,971 --> 00:04:48,620 theory that it's from shocks during 106 00:04:48,620 --> 00:04:50,640 quarrying or transportation or 107 00:04:50,640 --> 00:04:52,810 sculpting or something like that . One 108 00:04:52,810 --> 00:04:54,921 challenge is that it's outside . It's 109 00:04:54,921 --> 00:04:57,032 not like an object that you can bring 110 00:04:57,032 --> 00:04:59,199 inside and treat in the shop or in the 111 00:04:59,199 --> 00:05:01,366 lab . Um , you've got to work with the 112 00:05:01,366 --> 00:05:03,680 elements and uh , we are working at 113 00:05:03,680 --> 00:05:07,460 night because , because of the visitor 114 00:05:07,460 --> 00:05:09,820 experience during the day at Arlington 115 00:05:09,820 --> 00:05:13,570 Cemetery . Um , so that brings in 116 00:05:13,570 --> 00:05:16,650 some difficulties in seeing what we're 117 00:05:16,650 --> 00:05:19,200 doing . I mean we have lights on site , 118 00:05:19,210 --> 00:05:21,377 but it's not the same as daylight . So 119 00:05:21,377 --> 00:05:23,432 we have to make sure we have all our 120 00:05:23,432 --> 00:05:25,599 colour considerations . Taking care of 121 00:05:25,599 --> 00:05:29,120 the repair in 1990 , lasted 10 years . 122 00:05:29,120 --> 00:05:31,670 And we are essentially using a similar 123 00:05:31,670 --> 00:05:34,180 formula to that and hopefully hoping 124 00:05:34,180 --> 00:05:36,610 for the same life lifespan for the 125 00:05:36,610 --> 00:05:40,250 repair kill . Okay . Mhm . 126 00:05:40,940 --> 00:05:44,240 Okay . Okay . Yeah . Mhm . Yeah . 127 00:05:51,940 --> 00:05:52,150 No 128 00:05:58,140 --> 00:05:59,950 mm . Okay .