Helium Report for Month of May 2004 Users Amount %ofTtl Recovrd Lost %Lost $$$$$ Adams 0 0 0 $0.00 Andraka 334 5% 313 21 6% $219.50 Angerho 9 0% 8 1 11% $7.00 Astro B20 226 3% 221 5 2% $125.50 B25 0 0 0 $0.00 B122 791 11% 740 51 6% $523.00 B124 235 3% 227 8 3% $137.50 B155 0 0 0 $0.00 Biswas 0 0 0 $0.00 Chemist 374 5% 380 -6 -2% $733.00 Geology 90 1% 0 90 100% $405.00 Hebard 151 2% 151 0 0% $75.50 Hill 1110 15% 1030 80 7% $755.00 Ihas 0 0 0 $0.00 Lee 145 2% 127 18 12% $117.50 Norton 178 2% 0 178 100% $801.00 MBI4.7 138 2% 138 0 0% $276.00 MBI11T 510 7% 510 0 0% $1,020.00 MBI18T 0 0 0 $0.00 Meisel 193 3% 193 0 0% $96.50 MKBay#1 1078 15% 986 92 9% $769.00 MKBay#2 0 0 0 $0.00 MKBay#3 1068 15% 1068 0 0% $2,136.00 NSC 48 1% 39 9 19% $118.50 Stewart 137 2% 128 9 7% $91.00 Sulliva 324 4% 321 3 1% $169.50 Takano 0 0 0 $0.00 Tanner 202 3% 139 63 31% $258.50 W129 0 0 0 $0.00 TOTAL 7341 622 $8,834.50 lL lost 1339 lL lost / day 46 usage lost % 18% lL recovered at Master Meter 8663 recovery rate 85% transfers 65 $ amount is billed at $.50/lL used for physics or $2.00/lL for non-physics plus $2.50/lL lost. GN2 Usage Amount $$$$ NanoTech 1252 250.4 Helium Report for Month of May 2004 Users Amount %of Ttl Recovrd Lost %Lost $$$$$ Bowers 50 13% 50 $100.00 Christo 122 33% 122 $244.00 Eyler 127 34% 119 8 6% $274.00 Katritz Kleiman NMR 75 20% 78 -3 -4% $142.50 SpecSrv Talham Richard TOTAL 374 5 $760.50 Recovered at Master Meter 465 Recovered at Physics 466 Recovery system loss -2 Lost 3 Total recovery rate 99%