[1]Biomedical Engineering Program, South Dakota School of Minesand Technology, 501 E. Saint Joseph St., Rapid City, SD 57701, USA;
[2]Mechanical Engineering Department, South Dakota School ofMines and Technology, 501 E. Saint Joseph St., Rapid City, SD 57701,USA;
[2]Mechanical Engineering Department, South Dakota School ofMines and Technology, 501 E. Saint Joseph St., Rapid City, SD 57701,USA;
[3]Department of Biology, New Mexico Institute of Mining andTechnology, 801 Leroy Pl, Socorro, NM 87801, USA.;
Ballistics gelatin; Wound; Contamination; Bacterial model;