Mineralogical and liberation studies are the most important parameters used in the selection of separation. An investigation was carried out to identify the various types of minerals present in fluorite ore and to determine the suitability of the methods for its preconcentration and final concentration. The sample has been evaluated and characterized by ore microscopy, x-ray diffraction, chemical analysis and also approximate mineralogy based on chemical analysis and Microscopic studies and also the texture characteristics such as grain size, SITUATION of INFOR LOCKED PARTICLE and their arrangement in the ore body were also investigated. According to surveys conducted this ore contains of fluorite (40.52%), calcite (24%), quartz (20%), smitsonite (8%), galena (2%), clay minerals (3%), barite (1%) and goethite (0.6%). Carbonate phases is two parts sparry calcite, micrite to microsparate piece has been observed. Quartz, in the form of microcrystalline with limonite and goethite oxide of stained has been observed. The liberation degrees of crushed ore in different size fractions was estimated by the Counting method of showed that for fluorite (1000m), Calcite (100m) and quartz (90m) of fluorite in size 100 mesh (150m) with quartz (36%) and calcite (23%) were determined. The size fraction of -600, +425, can be assessed for gravity concentration as a preconcentration process and for the size fraction -150,+75 mm for flotation.

Introduction: The use of abdominal zippers for temporary abdominal closure was devised to facilitate repeated explorations, allowing multiple cleansing of the peritoneal cavity and the detection and management of septic complications. In our study, an open abdomen using a sterile zip in a patient with gangrenous bowels and reanastomosis derived infection is reported.Case report: In this study a patient with a history of appendectomy one year before referral (had referred to the physician with a one month complaint of abdominal pain) is presented. The patient underwent laparatomy twice. Most of his small intestine was resected due to the gangrene and primary anastomosis was performed. Finally after three days, the patient underwent multiple cleansing of the abdominal cavity following purulent discharge from the incision, acute respiratory distress syndrome and sepsis with diagnosis of discharge from the site of anastomosis. Zipper LOCKED method was used for temporary closure of abdomen wall in order to facilitate multiple access of abdominal cavity. Finally, abdominal wall was closed constantly.Conclusion: Temporary closure of the abdomen by means of devices such as zip gives the opportunity of rapid, easy and safe assessment, management and treatment of these patients to the surgeons.

OBJECTIVE: The cervical vertebrae are the most mobile segments of the vertebral spine. Since there are few supportive structures in our bodies, this part is more susceptible to traumatic injury. One of the most common injuries is facet fracture and dislocation that may be uni/bilateral. Primary treatment is a closed reduction with skull traction. In some cases the facets are LOCKED and it is impossible to treat even with maximal closed traction. Open reduction by surgical intervention is a suitable way for treatment. METHODS: This retrospective study was done on patients with trauma of vertebral spine referred to emergency center during three years. This survey was done on 274 patients with trauma of cervical spine and 19 patients with LOCKED facet syndrome. FINDINGS: From 19 patients, 12 were male and 7 were female. Falling from a high place was the most common cause of injury. It happened more in second and third decade of their life. The most common manifestation was neck pain. 12 patients had no neurological deficit, 4 patients had incomplete neurological deficit and 3 had completed neurological deficit. CONCLUSION: Different methods such as interspinous wiring, interfacet wiring and lateral mass plating were used for treatment.