Tavara Mines & Minerals

Tavara Mines and Minerals is renowned for manufacturing 100% water washed high quality manufactured sand for plastering, block work and concrete. Tavara Mines & Minerals steady growth over the last five years of operations has spread our operations across the region, throughout Karnataka. Today, Tavara products and services have a reputation for high quality and Tavara’s position as the leader in the industry makes us a preferred supplier in the region.

1. # 48, 100feet Ring Road, 2
nd
Phase, Jigani Industrial Area AnekalTaluk, Bangalore-560105
Mining Company

2. EXCAVATION
GRANITE QUARRYING
ROCK CUTTING WORKROCK CUTTING -NON
BLASTING
ROCK CUTTING -BLASTING
SERVICES
MINING SERVICES
STONE CRUSHING
QUALITY AGGREGATES
MANUFACTURED SAND
TRANSPORT
# 48, 100feet Ring Road, 2
nd
Phase, Jigani Industrial Area AnekalTaluk, Bangalore-560105

3. Tavara Mines & Minerals came into existing with a view of facilitating the various mining services for the growing
industrial needs. it is in its field of earth works, excavation works, granite quarry raising contract works, wagon drilling
and blasting works, deep excavation, hard rock cutting, blasting operations, MSDD Blasting works with electronic
equipment’s facilitating of stone crusher services for various applications and other related works with vision to be a
global player in mining services industry committed to total consumer satisfaction.
Tavara mines and minerals have acquired’ Sufficient Experience and skills to manage and handle projects of small and
large values The firm comprises of multidisciplinary team of qualified mining & mechanical engineers, technicians and
skilled workers backed by hard earned experience in mining service using heavy earth moving equipment’s and
transportation equipment's of various makes/latest models.
We take all measures to ensure the completion of work within the stipulated period and maintain the quality of works
as per the specification. We have worked as per various national and international standards to the e entire satisfaction
of our clients and consultants.
We do rock cutting with non-blasting methods using the multipurpose diamond wire saw cutting machine.
# 48, 100feet Ring Road, 2
nd
Phase, Jigani Industrial Area AnekalTaluk, Bangalore-560105

4. Figure 1 B.P. NO. 1: Safety is our major priority
# 48, 100feet Ring Road, 2
nd
Phase, Jigani Industrial Area AnekalTaluk, Bangalore-560105

5. We take all measures to ensure the completion of work within the stipulate period and maintain the quality
of work as per specifications.
# 48, 100feet Ring Road, 2
nd
Phase, Jigani Industrial Area AnekalTaluk, Bangalore-560105

6. SOIL EXCAVATION
HARD ROCK EXCAVATION
We cut both vertical and horizontalwith the help
of LD4 machine and diamond wire saw machine.
Jack Hammer and Non explosive blasting chemical.
MANUFACTURED SAND
New Optimized drilling and blasting method.
EXCAVATION WORK
ROCK CUTTING
NON BLASTING
METHODS
STONE CRUSHING
ROCK BLASTING
METHODS
TAVARA MINES AND MINERALS
# 48, 100feet Ring Road, 2
nd
Phase, Jigani Industrial Area AnekalTaluk, Bangalore-560105

7. Excavation Methods
Soil or Soft Rock
Excavation
Drilling Holes
1. Common Excavation
Combination with
Ripper & Dozer
2 (a). Optimization Drilling
& Blasting
Drilling Patterns
Types of Drills
2. Rotary1. Percussion
Specialized Blasting
Techniques
Types of Explosives
Blasting
Combination of Excavator &
Tipper
Excavating & Loading
Combination of
Excavator & Tipper
2 (b). Rock Cutting
with Non-Blasting
Combination of LD Bore
& Diamond wire saw
machine cutting
Using Soundless Stone
Cracking Powder
Combination with
Excavator & Tipper
2. Hard Rock Excavation
2 (c). Control
Blasting
Combination
with Excavator
& Tipper
Loading
Blasting Cap
Warning
Whistles
Blasting Mats
Blasting
Drills Drills
Type of
Machineries
Hydraulic Rock
Breaker
Jack Hammer Drill

8. TYPES OF MACHINERIES
Figure 2 B.P. NO. 10: Machineries used in our work
# 48, 100feet Ring Road, 2
nd
Phase, Jigani Industrial Area AnekalTaluk, Bangalore-560105

9. TYPE OF MACHINERIES
We have all types of machineries and combination. Based on excavation field we combine the machineries.
Sl. No. Machinery Number
1. Tippers (23 cubic meters) 35
2. Tata Hitachi EX-350 Excavator 5
3. Volvo EC 210B Excavator 4
4. Volvo EC 210B excavators with breaker attachment 3
5. Volvo 140B Excavator 2
6. D.G. Set 82.5kva &125kva(Silent Generators) 2 & 1
7. 60HP wire saw machine 4
8. LD4 multipurpose drilling machine 2
9. Atlas Copcoscrew air compressor xah230 2
10. I.R screw air compressor HP 450 1
11. ELGI screw air compressor HP 450 &dlo4012 and 400/100 & each crawler driller 4 1/2 prd 1 & 1
12. Jack hammer and accessories 40
13. 90 mm dia Wagon Driller 2
14. 40 Tons Cranes 1
List of Machineries
# 48, 100feet Ring Road, 2
nd
Phase, Jigani Industrial Area AnekalTaluk, Bangalore-560105

10. TAVARA MINES AND MINERALS
TIME STUDY
Time Study is more important for our company. The following cycle time study, we are following in every excavation period.
In every week, we are giving all the cycle time report to our company staff. The idea of this report is to identify the machinery
performances.
SHOVEL OPERATING PARAMETERS
CYCLE TIME:
It is the total time taken by a shovel to complete one full cycle of operation starting from the crowding operation into the face to
swinging, dumping and again coming back to the face for crowding operation.
•TOTAL CYCLE TIME= Crowding (Digging, Loading, Hoisting) time + Swinging time towards the truck + Dumping time on the tipper +
Swinging back for crowding operation.
•TOTAL LOADING TIME= No. of passes required by a shovel to fill a tipper + Cycle time by the shovel.
•CYCLE TIME OF A TIPPER= Spotting time + Loading time + Travel time with load + Spotting time discharge + Discharge time + Travel
time with no load + waiting for loading.
# 48, 100feet Ring Road, 2
nd
Phase, Jigani Industrial Area AnekalTaluk, Bangalore-560105

11. TAVARA MINES AND MINERALS
This waiting time may be reduced to zero if number of dumper required per shovel is perfectly matched.
SL.NO. SHOVEL WITH BUCKET CAPACITY, M
3
CAPACITY OF DUMPERS, TONS
1. 0.9 8
2. 2.5 25
3. 3.2 -5 35
Table 2Combination of shovels and dumpers combination.
# 48, 100feet Ring Road, 2
nd
Phase, Jigani Industrial Area AnekalTaluk, Bangalore-560105

12. TAVARA MINES AND MINERALS
CONTROLLED BLASTING
Scope of work: Conventional Drilling and Blasting
Drilling:
Drilling is carried out with jackhammers of 32mm dia.
Blasting
We will be using emulsion explosives and shock tubes (for the down the
hole and for the surface). Sand bags will be placed over the shock tubes
to ensure that the shock tubes are not damaged by mesh. The Link mesh
will be placed on the blasting of 2 meters on all sides. Over the link mesh
blasting mats of sufficient numbers, thickness, size and strength will be
placed to cover the blast completely plus 2 meters on all sides. The
blasting mats will have an overlap of at least 0-0.5 meters. This procedure
will ensure that fly rock is under control. Use of shock tubes of different
timing such as 17 MS, 25 msand 42 mswill ensure that the vibration is
well within control.
Vibration
You will monitor the vibration. All Location structures the vibration limits
for the present site must be fixed in consultation with GC/your consultant.
# 48, 100feet Ring Road, 2
nd
Phase, Jigani Industrial Area AnekalTaluk, Bangalore-560105

13. Permission for blasting
We will obtain for blasting from
the concerned Government
authority; our form 22-
licenseholder will obtain the
necessary approval from the
controller of explosives, once the
permission from the concerned
Government authority is
received. Our Form 22 agent will
obtain the necessary quantities
of explosives and accessories
from the manufacturers store
them in his magazine and supply
them through. Explosive van to
the blasting site Necessary
statutory requirement in this
regard will be taken care of by us.
TAVARA MINES AND MINERALS
# 48, 100feet Ring Road, 2
nd
Phase, Jigani Industrial Area AnekalTaluk, Bangalore-560105

14. Clearance at the time of blasting
Machineries are removed to safe distance. Your site in charge will give the clearance. We propose to carry out blasting operations
both in the daytime and in the nighttime. Competent Blaster
Blasting be carried out by competent persons having valid blaster’s certificate all the operations of drilling & blasting will be under
the supervision of experienced personal, who will coordinate with your engineers
Explosive van
We will be engaging two explosive vans i.e. one for explosive and one for accessories, for the transportation of explosives from
magazine to blasting site. We request that a location. For parking the explosive vans is identified and provided by you.
De watering
You adequate pumping arrangement may please be provided to clear the seepage water; rainwater or any other stagnated Water at
the site will do de watering at the worksite.
Transportation
Up to 25km for the place of blasting site
TAVARA MINES AND MINERALS
# 48, 100feet Ring Road, 2
nd
Phase, Jigani Industrial Area AnekalTaluk, Bangalore-560105

15. TAVARA MINES AND MINERALS
METHOD OF WORKING CONTROL BLASTING -SPECIFICATIONS
SPECIFICATIONS VALUE
Hole Diameter, mm 32
Burden 0.8
Spacing, m0.8 0.8
Hole depth 1.2
Total number of holes Depend upon pattern
Total drill depth 48
Type of explosive
Cartridge slurry/emulsion
(25mm dia, 200mm long and 0.125kg/cartridge)
Charge per hole,kg 0.125(1 cartridge)
Charge length,m 1.0
Stemming length,m 0.5 to 0.6
Stemming material Drill cutting/crusher dust
Total charge,kg 30
Maximum charge per delay, kg1.25
Initiation system Shock tube initiation system
Blasted volume, m
3
46.0
Specific charge, kg/m
3
0.65
Muffing material
Link mesh of 1” x 1” of 14 SWG on the blast area and plus 3m on all the sides, old tyres, sand bags and above that blasting
mats (1.5m x 2.7m. 1.1MT) of sufficient numbers, thickness, size and strength to cover the blast completely plus 3m on all the
sides (placed skin to skin for tyresand with an overlap of 0.5m in case of rubber mats)
# 48, 100feet Ring Road, 2
nd
Phase, Jigani Industrial Area AnekalTaluk, Bangalore-560105

16. TAVARA MINES AND MINERALS
METHOD OF WORKING WITH OPEN BLASTING
HOLE DIAMETER, MM
32 MM DRILLING WITH JACK HAMMER
114.3 MM BORE HOLE
Burden, m
1.2
4 m
Spacing,m
0.8
2 m
Hole depth, m
1.5
6 m
Total number of holes
96
36 Holes
Total drill depth, m
144
216 m
Type of explosive
Cartridge Booster (25mm dia, 200mm
long+0.250kg + Ammonium Nitrate)
Cartridge Booster (85mm dia, 450mm long +
Ammonium Nitrate)
Booster –2.78 Column 2.78
Ammonium Nitrate –7 Kg/meter
Charge per hole, kg
0.550kg
19.5 Kg.
Charge length, m
1.0
4 meters
Stemming length, m
0.5
2 meters
Stemming material
Drill cutting/crusher dust
Drill cutting/crusher dust
Total charge, kg
144kg
704 Kg.
Blasted volume, m
3 650m
3
850 m
3
Specific charge, kg/m
3 0.8
1.36
# 48, 100feet Ring Road, 2
nd
Phase, Jigani Industrial Area AnekalTaluk, Bangalore-560105

17. Field Of Methodology
Pre-Blast Survey
This is the first step involved in understanding the preliminaries of the blasting practices
to be followed. In order not to miss any operation, an elaborate survey sheets are
designed. All the details of the blasting block like the hole diameter, burden, spacing,
rock type, face characteristics, hole position, individual hole depths, nature and condition
of holes, type and explosive quantities, initiation system, sequence and delay timings and
other essential parameters should be recorded by the client.
In-Blast Survey
This covers the time period from the first initiation impulse until the broken rock has
come to rest and the vibration from the event have died away. Physical observation of
the fly rock and the efficacy of the stemming to be carried out when blasting under
restricted conditions. An in-blast and post-blast survey sheet for this purpose is given in
written. Vibration monitoring shall be carried out depending on the site-specific
requirements at critical locations.
Post Blast Survey
Post blast survey is essential to assess the relative performance of the blasts.
The after blast debris is the manifestation of the cumulative efforts that have been put in
order to break the rock. In order to establish the level of efficacy of a blast design certain
elements of the broken material like fragmentation, throw, back break, muck profile etc.
are to be assesse.
TAVARA MINES AND MINERALS
# 48, 100feet Ring Road, 2
nd
Phase, Jigani Industrial Area AnekalTaluk, Bangalore-560105

18. CONTROL BLASTING
PROCEDURE
Cleaning of Blast Area
All loose stone pieces on the blasting area are to be removed prior to charging of holes,
as these stones will result as fly rock during actual blasting operations in addition to
those from the blast itself.
Marking and Drilling
It is essential that the whole positions be marked in the field using measuring tape with
white/red paid so that the holes are drilled as per the design. While drilling, accuracy is
to be maintained with regard to position of the holes, verticality, burden, spacing depth
etc. Drilling should be done under strict supervision of a competent officer/supervisor.
Drilling should not be left unattended and to the discretion of the drilling crew.
Plugging of drilled holes.
Plug the drilled holes with wooden plugs such that water, mud, drill cutting do not get
into them so that they do not loose their depth.
Transportation of explosives and other accessories.
The contractor only upon completion of drilling shall transport explosives to the drilled
site. No simultaneous drilling and charging to be taken up. All the necessary statutory
requirements for storing of the explosives at a magazine, site, transportation, handling
and usage are to be fulfilled as per government regulation/laws
A licensed shot firer/blaster should be made available at the blasting site for executing
the blasting activities and a competent person from the client should over see all the
drilling and blasting operations.
TAVARA MINES AND MINERALS
# 48, 100feet Ring Road, 2
nd
Phase, Jigani Industrial Area AnekalTaluk, Bangalore-560105

19. CONTROL BLASTING
PROCEDURE
Charging of holes.
Priming of explosives should be done at a safe place and charging is to be carried out as
per the approved design. Before charging the holes, if presence of water is found in the
drilled hole, it should be flushed out. Stemming is to be carried out with suggested
material and to a suggested length. The initiation sequence is to be followed as per the
approved initiation system and delay sequencing.
Muffling
No blasting should be carried out without proper muffling. To restrict the flying
fragments from the blast, the blast area shall be muffled comprising of 1” x 1”, 14 SWG
link mesh old rubber tyresof trucks and rubber blasting mats of minimum specified size
and weight. The blasting block shall be covered fully and in addition. 3m on all four sides
of the charged block as shown in Figure4. Sand bags are to be placed over the muffling
material if required. It is necessary to have a barricade around the entire station areas
and cut and cover areas related to these stations. In addition, depending on the local
conditions it may be necessary to erect a canopy of sufficient strength to cover the
proposed excavation site or area.
TAVARA MINES AND MINERALS
# 48, 100feet Ring Road, 2
nd
Phase, Jigani Industrial Area AnekalTaluk, Bangalore-560105

20. SOFT ROCK EXCAVATION
B.P. NO. 3: Soft Rock Excavation Operation
# 48, 100feet Ring Road, 2
nd
Phase, Jigani Industrial Area AnekalTaluk, Bangalore-560105
Soft rock excavation and soft
rock breaking using ripper with
hydraulic excavators.
In soft rock excavation we use
latest heavy earth moving
equipment to break and
excavate the soft rock in mass
quantity and finish the work at
your time schedule.

21. MEDIUM ROCK
MEDIUM ROCK WITH NATURAL JOINTS
# 48, 100feet Ring Road, 2
nd
Phase, Jigani Industrial Area AnekalTaluk, Bangalore-560105
Medium rock means schist rock is a
medium grade metamorphic rock
with medium to large grain of mica,
which is breakable only with open
joints not in sheet rock.
Consideration of medium rock by
Rock Quality Designation Recovery
(RQD) %, which recovery sample
during core cutting the percentage
of core sample is to be at within
28% to 30% of the recovery sample.
In soil investigation report the
recovery % sample has not been
mentioned in your report.

22. METHODOLOGY OF EXCAVATION OF MEDIUM ROCK
MEDIUM ROCK WITH NATURAL JOINTS
# 48, 100feet Ring Road, 2
nd
Phase, Jigani Industrial Area AnekalTaluk, Bangalore-560105
Excavation by means of mechanical
excavator with the attachment of
hydraulic rock breaker of 20 tons
capacity with 150mm diameter chisel,
the above method of work which is
consider only has only medium rock.
Note:
Once medium rock is completely
excavated which HARD ROCK INTO
CONSIDERATION

23. TAVARA MINES AND MINERALS
# 48, 100feet Ring Road, 2
nd
Phase, Jigani Industrial Area AnekalTaluk, Bangalore-560105
Required Pneumatic machineries.
90mm Diameter Drilling machineries.(LD 04 -150PSI –450CFM)
32mm Drilling Equipment (100 PSI)
60HP Multipurpose Diamond wire saw machine. (Horizontal & Vertical
PROCEDURE FOR HARDROCK CUTTING USING MULTI PURPOSE DIAMOND WIRE SAW
A Diagram showing Taper cutting of hard rock using
with Diamond rope. With necessary tools and plants.
A Diagram showing horizontal cutting of hard rock
using with Diamond rope.
B picture showing Vertical Cutting of hard rock using
Diamond rope.

24. TAVARA MINES AND MINERALS
# 48, 100feet Ring Road, 2
nd
Phase, Jigani Industrial Area AnekalTaluk, Bangalore-560105
PROCEDURE FOR HARDROCK CUTTING USING MULTI PURPOSE DIAMOND WIRE SAW
Diagram Showing the Rock Removed from Rock bed by using with
wire saw will be broken in to pieces by using 32mm Drilling with jack
hammers and the voids filling with Expansive monster chemical (C II)
for cracking.
Further to it Remaining slices will be broken in to pieces by using jack
hammers / Rock Breakers
Disposal of all the broken boulders to outside of the premises using
dumpers.
C Diagram Showing Hard rock cutting using with Vertical strands.

25. RESOURCE PLANNING
# 48, 100feet Ring Road, 2
nd
Phase, Jigani Industrial Area AnekalTaluk, Bangalore-560105
Sl.
No.
Category Number of
Employees
Highly skilled
1 Mining Engineer 6
2 Mechanical Engineer 10
3 Manager (Safety) 2
4 Civil Engineer 2
Skilled
1 Foreman 12
2 Supervisor 8
3 Store Keeper 2
4 Machinery Operators 35
5 Helper 25
6 Drillers 110
Total
212

26. WORK COMPLETION LETTER
# 48, 100feet Ring Road, 2
nd
Phase, Jigani Industrial Area AnekalTaluk, Bangalore-560105

27. COMPLETED PROJECTS
# 48, 100feet Ring Road, 2
nd
Phase, Jigani Industrial Area AnekalTaluk, Bangalore-560105
SIERRA CONSTRUCTION PVT. LTD.
Type of Project :Excavation of hard rock
Description of the Works Carried out: Hard rock excavation with
non-blasting method.
Location : Bangalore
Value of contract : Rs. 2.86 cr
Commencement date as per Contract : 8/1/2011
NIRMITHI CONSTRUCTIONS, BANGALORE
Type of Project :Excavation of soil & hard rock
Description of the Works Carried out: Hard rock excavation with
non-blasting method.
Location : Bangalore
Value of contract : Rs. 5,80,900/-
KUNNEL ENGINEERS(DLF), BANGALORE
Type of Project :Excavation of soil & hard rock
Description of the Works Carried out: Soil excavation method.
Location : Bangalore
Value of contract : Rs. 2500000/-
TAMILNADU STATE FOREST DEPARTMENT WORK
Type of Project :Excavation work
Description of the Works Carried out : Soft rock excavation
Location : Tamilnadu
Value of contract : Rs. 8,14,00,036
Commencement date as per Contract : 10/4/2010
Scheduled date of completion of work : 1/4/2011

28. COMPLETED PROJECTS
# 48, 100feet Ring Road, 2
nd
Phase, Jigani Industrial Area AnekalTaluk, Bangalore-560105
HOUSE OF HIRANANDANI
Type of Project :Excavation of soil
Description of the Works Carried out : soil excavation Method
Location : Bangalore
Value of contract : Rs. 3,23,02,036
Commencement date as per Contract : 10/4/2013
Scheduled date of completion of work : 1/4/2014
Actual date of completion of work : 1/4/2014
PURAVANKARA WEST END PROJECT
Type of Project :Excavation of soil & hard rock
Description of the Works Carried out : Hard rock
excavation with non-blasting method
Location : Hosurroad, Bangalore
Value of contract : Rs.11 Cr
PALLADIUM CONSTRUCTION INDIA PRIVATE LTD, BANGALORE.
Type of Project :Excavation of soil & hard rock
Description of the Works Carried out : Hard rock excavation with non-blasting method
Location : Bangalore
Value of contract : Rs. 60 cr
Commencement date as per Contract : 4/4/2012
Scheduled date of completion of work : 8/5/2012
Actual date of completion of work : 10/18/2013

29. ONGOING PROJECTS
# 48, 100feet Ring Road, 2
nd
Phase, Jigani Industrial Area AnekalTaluk, Bangalore-560105
PALLADIUM CONSTRUCTION IND PVT LTD,
BANGALORE.
Type of Project : Excavation of soil & hard rock
Description of the Works Carried out : Hard rock excavation with
non-blasting method
Location : Bangalore
Value of contract : Rs.29.42 Cr
SRINIDHI GRANITES
Type of project : supply of rough granite blocks
Description of the works carried out : supply of rough granite blocks
Location : Bangalore
Value of contract : rs.1.2 crper month
S.L.V STONE CRUSHER
Type of project : drilling, blasting, loading & transporting of -600mm
boulders
Description of the works carried out : drilling, blasting, loading &
transporting of -600mm boulders
Location : Anekal, Bangalore
Quantity of contract : 35000 tons per month
HOUSE OF HIRANANDANI
Type of Project : Excavation of soil
Description of the Works Carried out : soil excavation Method
Location : Bangalore
Value of contract : Rs. 1,23,02,036
HASIRU AVIATION PARK PVT LTD
Type of Project : Survey & calculation of quantity for thousand
meters runway
Description of the Works Carried out : Survey & calculation of
quantity for thousand meters runway
Location : Anekal, Bangalore
Value of contract : 1 cr.

30. Address: #48, 100ft Ring Road, Jigani Industrial Area, Anekal Taluk, Bangalore –560105
Phone: [phone]
Website: www.tavarasands.com/ www.tavara.in