Helium Report for Month of April 2006 Users Amount %ofTtl Recovrd Lost %Lost $$$$$ Andraka 9 0% 7 2 22% $9.50 B20 214 3% 210 4 2% $117.00 B25 52 1% 52 0 0% $26.00 B122 23 0% 36 -13 -57% ($21.00) B124 48 1% 14 34 71% $109.00 B126 0 0 0 $0.00 B155 0 0 0 $0.00 Biswas 472 8% 472 0 0% $236.00 Hebard 925 15% 888 37 4% $555.00 Hill 640 10% 580 60 9% $470.00 Lee 372 6% 340 32 9% $266.00 Meisel 335 5% 335 0 0% $167.50 MKBay#1 1140 19% 1095 45 4% $682.50 MKBay#2 0 0 0 $0.00 MKBay#3 998 16% 983 15 2% $2,033.50 Petkova 0 0 0 $0.00 Stewart 38 1% 30 8 21% $39.00 Sulliva 0 0 0 $0.00 Takano 0 0 0 $0.00 Tanner 39 1% 23 16 41% $59.50 W107 0 0 0 $0.00 W119 311 5% 293 18 6% $667.00 W129 0 0 0 $0.00 Astro 0 0 0 $0.00 Chemist 252 4% 295 -43 -17% $396.50 Geology 0 0 0 $0.00 MBI4.7 132 2% 132 0 0% $264.00 MBI11T 0 0 0 $0.00 MBI18T 0 0 0 $0.00 Norton 146 2% 130 16 11% $332.00 NSC 0 0 0 $0.00 TOTAL 6146 231 $6,409.00 lL lost 645 lL lost / day 23 usage lost % 10% lL recovered at Master Meter 8279 recovery rate 92% transfers 65 $ amount is billed at $.50/lL used for physics or $2.00/lL for non-physics plus $2.50/lL lost. GN2 Usage Amount $$$$ NanoTech 2143 428.6 Helium Report for Month of April 2006 Users Amount %ofTtl Recovrd Lost %Lost $$$$$ Angerho 79 24% 57 22 28% $213.00 Christo 117 35% 113 4 3% $244.00 Eyler 40 12% 40 $80.00 Fanucci 35 11% 24 11 31% $97.50 Katritz Kleiman L335 NMR 60 18% 50 10 17% $145.00 SpecSrv 0 TOTAL 331 47 $779.50 Recovered at Master Meter 409 Recovered at Physics 411 Recovery system loss -2 Lost 45 Total recovery rate 86% $ amount is billed at $2.00/lL used plus $2.50/lL lost This is not your bill, It is for your information only