BOZENA 4 Mine Clearing Flail System
The new BOZENA 4 Mine Clearing Flail System is
one-of-a-kind in many aspects, from the tracking of AP and AT mines to the
lightweight and small design that enables BOZENA 4 to be easily transportable.
by Marián Zimmermann, Dipl. Eng., Project Administrator,
The latest model from the well-known Slovakian Mine Clearing
Machine series is BOZENA 4, which its producer, WAY Industry, introduced to
the international community in May 2002. The BOZENA 4 Mine Clearing Flail
System (BOZENA 4) is a mechanical tracking mine-clearing machine controlled by
a transmitter as far away as 2,000 m. BOZENA 4 was designed for clearing AP
mines that are both pressure and tripwire fused, and for clearing AT mines
containing no more than nine kg of trinitrotoluene (TNT) charge. The system is
able to clear mines between buildings, along paths, on plantations, around
permanent obstacles and where the ground cannot support heavy weights. A truck
pulling a trailer carrying the BOZENA 4 transports it between work areas. An
air-conditioned and armoured cabin sits on the truck bed for an operator to
maneuver the BOZENA 4 within visibility; a protected remote camera system can
be provided as well. BOZENA 4 is protected with an armoured metal covering and
by a shield directly behind the flail at the front of the vehicle, giving
protection against damage from detonations. The amount of clearing BOZENA 4
can perform daily depends on the ground and terrain conditions. The average
hourly cleared area is about 1,700 sq m.
|The BOZENA 4 consists of:
1. Prime mover B4-L1203 RC
2. Flail (two pcs) - working tool
3. Operator’s monitoring cabin (air-conditioned)
4. Trailer for transport between operational sites
characteristics of BOZENA 4
Engine producer’s data
||DEUTZ BF 4L913
||Four-stroke, turbocharged diesel
with direct fuel injection, air cooled
|Volume of cylinders
||4,086,00 cm³ (four in-line
|Rated power output
at 2,500 rpm
||78 kW/106 HP
||223 g/kWh (8.2 l/Mh)
|Flail - Working tool
|Width of flail
|Soil depth penetration by flail
||Up to 250 mm
|Operating rpm of
||350–400 per min
|Working speed (sq m per hour)
|Light soil condition
||1,800 sq m per hour
||1,100 sq m per hour
|Heavy soil condition
||520 sq m per hour
|Remote control prime mover B4–L1203
(with recovery winch and tire tracks,
but without flail)
|Total weight of BOZENA
- Transmitter CSB T3 is the
portable module equipped with
setting and controlling elements.
|Minimum operational time with
fully charged accumulator
(ACU 100 percent charged)
|| 6 hours
|Band of radio modem
- Receiver CSB R3 is the
firmly built-in module that
receives commands from the
BOZENA 4 Training Course
Due to the mechanical element of operating the BOZENA 4, we request that
technicians with a good technical background and experience in the field of
heavy construction machines (loaders, tractors, bulldozers, etc.) be chosen.
Knowledge about hydraulic systems, diesel engines, electronics, etc., is also
The required personnel are as follows:ws:
- Two trained operators per BOZENA 4
One substitute for every three BOZENA 4s
Two trained mechanics per service team
One service team for every two to four BOZENA 4s
One substitute for each two service teams
The General Training course schedule consists of the following two parts:
1st part (theory): This part covers the theory behind the machine, the
design, the regular maintenance required and the troubleshooting system. It is
held at the manufacturing site in Slovakia for five working days.
- 2nd part (practise): This part covers practical training with the machine
and a parallel theory training refresher course. It is held for five working
days in the country where the BOZENA 4s will be deployed once the shipment to
site is completed.
Both training courses can be conducted in the country of the BOZENA 4s’
deployment, if preferred. Three manufacturers’ instructors conduct training,
one of which will be an interpreter.
|BOZENA 4 was tested several times on AP & AT mines by various organizations
Croatian Mine Action Centre (CROMAC), October 2002:
Ethiopian Mine Action Office, May 06, 2003:
- AP blast mines: PMA 1 (five pcs), PMA 2 (five pcs), PMA 3 (five pcs)—at
- AP bounding fragmentation mines: PMR-2A (two pcs), PROM-1 (two pcs)
- AT mine: TMM-1 (one pc—5.6 kg of TNT)
Poland Army, December 05, 2002:
- AP blast mines: PMD-6 (two pcs), PMN (two pcs)
- AT mine: PRB-M3 (one pc—6.0 kg TNT/RDX/Aluminum powder - 70/15/15)
- AT mine: TM-62P (one pc—7.0 kg of TNT)
Military Technical & Testing Institute (Záhorie, Slovakia), October 2002,
- AP fragmentation & bounding mine: PP Mi-Sr II (13 pcs)
- AT mines: PT Mi-Ba III (eight pcs—9.0 kg of TNT), PT Mi-K (two pcs—4.9 kg
BOZENA 4 was also positively evaluated by mine-clearing specialists from
various non-governmental organizations (NGOs), UN Mine Action Centres (MACs)
and UN Peacekeeping Forces operating in the territory of former Yugoslavian
countries (Croatia, Bosnia, Kosovo), northern Iraq, Lebanon, Albania and
When comparing BOZENA 4 with other demining machines, the following advantages
The price of equipment and spare parts is low due to the simple design.
Servicing is not difficult and not expensive due to the simple design.
Servicing can be carried out immediately if the manufacturer’s mechanic is
on the operational site, or if not, within three days in Europe.
The remote control aspect of BOZENA 4 provides maximum safety because the
operator is at a safe distance from possible explosions. The operator is
seated in an armoured, air-conditioned cabin located on the truck bed at a
minimum distance of 20 m from the minefield, creating low operator stress and
virtually no danger.
The extremely small dimensions of BOZENA 4 (width: 2,716 mm, length: 6,052
mm, height: 2,145 mm) make it highly maneuverable in confined spaces and under
Being small and light (5.8 tons), the BOZENA 4 will not get stuck while
operating in muddy and marshy terrain as easily as other demining vehicles
that often exceed 20 tons.
Using the quick-mounting steel tire tracks may enhance its operating
capability over wet and muddy terrain.
The producer can provide professional training courses for customer
personnel. Only trained personnel are allowed to operate the machine and
perform daily maintenance and minor repairs.
WAY Industry supports the following mechanical flail demining teams with
BOZENA 4 machines:
Albania: In 2002, Slovakian personnel cleared the area around the
Albanian-Kosovo border under the UN Development Program/Albanian Mine Action
Executive (UNDP/AMAE) project with the help of one BOZENA 4. The extremely
harsh conditions and steep mountains proved BOZENA 4’s durability.
Bosnia and Herzegovina: In 1997, one BOZENA 4 flail team with Slovakian
personnel won a contract for mechanical demining services in Bosnia and
Herzegovina under management of the UNMAC in Sarajevo. The BOZENA 4 flail team
cleared approximately 155,000 sq m of densely vegetated minefields in three
months through awful weather conditions.
Croatia: From 1996 to 1998, two BOZENA 4 flail teams worked with a Slovak UN
Transitional Administration for Eastern Slavonia (UNTAES) engineering military
During this period, the two BOZENA 4s cleared 96 AT mines and more than
1,000 AP mines without significant technical damage. Due to this great
performance, 12 more BOZENA 4s were sent to speed up the process of mine
clearance at this moment. The Slovakian president, Mr. Rudolf Schuster,
donated one unit of the latest model, the BOZENA 4, to the International Trust
Fund in Slovenia during the ninth meeting of the 16 Centro European presidents
in Slovenia on May 31, 2002. This BOZENA 4 will be used in Croatia under the
management of the CROMAC.
Kosovo: During 2000 and 2001, four BOZENA 4s cleared an area in Kosovo. Two
BOZENA 4s worked with the Slovak Armed Forces and Kosovo Forces (KFOR), and
the remaining worked on UN mine action projects.
Northern Iraq: In 2001, the UN Office of Project Services (UNOPS), as a part
of the “Oil for Food” programme, contracted nine BOZENA 4 flail teams with all
elements of demining support. All nine BOZENA 4s will help in the
reconstruction of Iraq, mostly in the north.
Eritrea: In 2001, the UN Mission in Ethiopia and Eritrea (UNMEE) Slovak
Engineer Units used nine BOZENA 4s that cleared 2,937,000 sq m of minefields
and continue to perform a great job.
Lebanon: In May 2002, four BOZENA 4s were deployed in southern Lebanon to
perform demining activities under the Operation Emirates Solidarity project
funded by the United Arab Emirates (UAE) government.
Sri Lanka: One BOZENA 4 will prove its capabilities with UNDP support to
mine action in the tropical conditions of Sri Lanka.
*All photos courtesy of the author.
WAY Industry, a.s.
BOZENA 4 dept/Oddelenie Bozena
Jasíkova 2, 821 03 Bratislava, Slovakia
Tel: +421 (2) 48 291 320
Fax: +421 (2) 43 33 75 29