Millisecondscodec eae ease censaercecceescenenas aeeccenerres ve aecccecueranhurescees Tenths of a Second ......... 0... e ect e cece eee ee ee ceceteteceeeereeneuce 32 A Few Seconds 2.0.0.0... 0... ccc cece cece cence teen nec e ee eee ee cneeseentteeeeennes 32 Minutes to Days...... senna eee ee eee eee Eee eee Ee eee ene ee eee EEE tbe e eae 32 WHY NUCLEAR EXPLOSIONS REMAIN CONTAINED. ............000ceeeeceeee: SELECTING LOCATION, DEPTH, AND SPACING: .............0... ce ceee eee eeee REVIEWINGA TEST SITE LOCATION......... 0.06. cece eee c cence cece cece ee eeees CONTAINMENT EVALUATION PANEL ............ 0c ccs ecece tcc c eee eeetenenees CONTAINING VERTICAL SHAFT TESTS ........... 0... ccc cece cece cence cence eee CONTAINING HORIZONTAL TUNNEL TESTS ......2... 0... ccc c ccc e rece ee ens TYPES OF RADIATION RELEASES ......... 0.0.02. ccc cece cece eee e cence teen eens 34 35 37 38 40 41 46 Operational Release .............-....eeceee cee ee eee bee e cence eee e eee ence ees RECORD OF CONTAINMENT . 2.0.0.0... cece cece ccc eee e ence teen cet eeeeene ees Containment Evaluation Panel ......... ved e eee eee ence teen mee eee e eee ee ee eens. Vertical Drill Hole Tests ..................00.. bee e cee tee cece etn ee eee et teen enees 47 47 47 48 From the Perspective of Human Health Risk ................ ccc eee e eee e eee eee A FEW EXAMPLES:..... 00.0. ccc cece cece ere ence eee eee e ee te eee eeeer eens IS THERE A REAL ESTATE PROBLEM AT NTS? vee eee e eee eect eee e cece eee TIRED MOUNTAIN SYNDROME?....0. 00... c cece cece cece eee e eee e eee ere e ees HOW SAFE IS SAFE ENOUGH?..... voce eseneeeeee beeen cece cece teen tenet eeenees 49 49 51 51 54 Containment Failure: ................. cee eee cee eee nr e eben eect eee neem etter ees 46 Late-Time Seep... 00.0 ccc eee ec eee nee tee e nee e eee tenet cere eter eeeees 46 Controlled Tunnel Purging ........... 00... ccc cece cence cee cece e een eeeeeenes 47 Horizontal Tunnel Tests 2.2.0.0... ccc ee eee cee ence teen eens rece eenens 43 Box Box Page 3-A. Baneberry ....... gene eect ee eeeeees bene ethene beet ee eect teen ete eeeeenes 33 Figures Figure Pare 3-1. Formation of Stress ‘‘Containment Cage” .......... 0.0.0. cece cece rece eee: 35 3-2. Minimum Shot Separation for Drill Hole Tests ....................... 0. eee 3-3. Minimum Shot Separation for Tunnel Tests ............... 0.0. c cece cece eee 3-4. ‘*Typical’’ Stemming Plan ...... 2.2.2... cece cece ce ee eee e ence ene ns 3-5. Three Redundant Containment Vessels ................0. 0. ccs e cece cent eee 38 39 41 42 3- 10. Radius of Decrease in Rock Soength cece cnet e eens cee cece eee eee e eee nee e nes 53 Table , . Table Page 3-1. Release From Underground Tests .............0- 0. ccc cece cece cent eee eee ene ees 48