The Rajpura Dariba Mine is located at the southern extremity of the belt. The ore bodies are designated as Main Lode and East Lode. Main lode with a N-S strike is further divided into two, viz àviz the North lode (900m in length and dipping at 70°-75°E) and the South lode (500m in length and dipping 60°-70°E). The East lode is located about 150 to 200m away from the hanging wall side of the South lode and has a length of 600m. The area between the South and North Lodes is traversed by 2-10 m wide meta-basic dykes. Four sets of joints are developed due to deformation. Shears are represented by narrow zones of crushing, brecciation and gouging, mostly 0.1-2.0 m wide. These are highly persistent along strike and dip and occur at the contacts and within the ore bodies for South and North Lodes. However, they are not found in East Lode. Faults are of reverse type with low southeasterly dipping planes striking N40°-60°E.

The 17 km long Dariba-Bethumni Mineral Belt comprises medium to high-grade metamorphosed metasediments belonging to the early Proterozoic Bhilwara Supergroup. The sequence forms an isoclinal fold and is surrounded by gneisses and migmatites of the Mangalwar complex. The main ore minerals are galena and sphalerite and minor silver-bearing fahlore, while pyrite and pyrrhotite are the main sulphide gangue minerals.

The Rajpura Dariba deposit comprises several mineralised lodes: on the west flank of the syncline, the North and South Lodes, which ........

Ore body of Rajpura Dariba deposit is divided into four lodes i.e. Main, South, North & East Lode. East lode is parallel to south lode in upper extremity but in lower depth, it is parallel to Main & North lode.

Underground Mining
The general surface RL of RDM is around 500mRL. The existing working depth of working is varying from 300m in north lode to 620m in main lode. The mine can be approached by 3 accesses from surface shown as under with details:
- Main Shaft (Surface to -92mRL)
o Total Depth : 611m (501 to -110mRL);
o Working Depth : 593m (501 to -92mRL);
o Purpose & Capacity : Man winding (40 persons) & Ore hoisting (0.9mtpa).

- Auxiliary Shaft (Surface to 0mRL)
o Total Depth : 509mRL (501 to -8mRL);
o Working Depth : 501m (501 to 0mRL);
o Purpose & Capacity : Man winding (14 persons).

- Ramp
o Total Depth : 658m (501 to -157mRL);
o Purpose & Capacity : Ore hauling (1.0mtpa) & transportation.

Blast Hole Stoping Method (BHS) is being applied in the mining blocks where the ore body width is narrow and varying from 8 to 15m. The entire strike length is divided into 20m long panels, designated as primary and pillar stopes. The stopes are mined using DTH (115mm) holes for down drilling from the upper drill level. Blasting is done against a slot raise. The stopes are back filled with cement fill after removal fore.

Vertical Retreat Mining (VRM) was adopted at Rajpura Dari ........

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