Half-yearly report
             



                                                        26 March 2008

                        NEPTUNE MINERALS PLC
                    ("Neptune" or the "Company")

                           INTERIM RESULTS
                                                     For the six
months ended 31 December 2007

Neptune  Minerals  Plc  (AIM:  NPM),  the  AIM  listed  explorer  and
developer of Seafloor Massive Sulphide ("SMS") deposits is pleased to
announce its interim  results for  the six months  ended 31  December
2007.

Highlights:

Two new  hydrothermally inactive  SMS zones  were discovered  on  the
Rumble II  West seamount  in the  Company's New  Zealand  prospecting
licence PL39-195 (Kermadec), over which Neptune is preparing to  make
its first mining licence application.

A conceptual engineering  scoping study was  commissioned in  October
2007 to review existing and  potential technologies that may be  used
for the commercial development of SMS deposits.

Project Trident was announced  - Trident is  a program of  continuous
SMS exploration  planned  to commence  in  2008 and  using  dedicated
survey  and   sampling  vessels,   offshore  New   Zealand.   Funding
discussions  with  potential  joint  venture  partners  and  contract
negotiations for Trident operations are ongoing.

Exploration licences were  granted in  Papua New  Guinea and  Vanuatu
waters - granted exploration tenements  now total 278,000 km2  within
the Exclusive Economic Zone ("EEZ") of New Zealand, Papua New Guinea,
the Federated States of Micronesia and Vanuatu.

Further applications  for exploration  licences  were lodged  in  New
Zealand, bringing the  total area  under application  to 434,000  km2
within the waters  of New  Zealand, Japan,  Commonwealth of  Northern
Mariana Islands, Palau and Italy.

The Company's  second and  third  New Zealand  exploration  programs;
Kermadec 07  and  Colville-Monowai  2007, were  completed  in  August
2007.  In July and August 2007, Neptune also participated in a  joint
Canadian-German  research   program   over  the   Company's   Italian
application areas.

Neptune's management team was strengthened with the appointment of  a
Corporate Development  Manager and  an  Environment Manager  in  late
2007.

Post-reporting period events:

Neptune's management team was further strengthened with the  addition
of a  Contracts  & Procurement  Manager  and a  New  Zealand  Country
Manager.

Neptune  signed  a  Letter   of  Intent  in   March  2008  with   C&C
Technologies, one of the world's leading marine survey companies, for
the provision of autonomous  underwater vehicle survey, sampling  and
vessel charter services.  The L.O.I. commits both parties to contract
negotiations and project preparations towards Project Trident.


Dr Simon McDonald, CEO of Neptune, said:

"Following the location  of inactive SMS  zones within Neptune's  New
Zealand tenements,  the  Company is  focussed  on lodging  its  first
mining licence application.  The Company still aims to conduct  trial
mining by 2010. Neptune is building up its management capabilities to
support the Company's growth and transition from SMS explorer to  SMS
developer.

"At the same  time, Neptune is  planning to step  up its  exploration
activities to pursue the Company's vast opportunities. In the past 12
months, Neptune's  tenement acreage  has increased  by 650%.  We  are
progressing discussions with potential joint venture partners to farm
into Neptune's  New  Zealand  licences  and  participate  in  Project
Trident."

The interim results for the six months ended 31 December 2007 will be
posted to shareholders  and are  available on  the Company's  website
www.neptuneminerals.com. Extracts from these financial statements are
set out below.


- -END-


For further information please contact:


Simon McDonald (Neptune MD and CEO)            T: +61 (0)2 9957 5244
By email to the Company                        info@nepmins.com
Richard Hail (Fox Davies Capital Limited,      T: +44 (0)20 7936 5200
Broker)
Fiona Owen (Grant Thornton Corporate Finance,  T: +44 (0)20 7383 5100
Nomad)
Rozanne Ichikowitz (Grant Thornton Sydney)     T: +61 (0)2 8297 2522
Nadja Vetter / Matthew Law (Cardew Group, PR)  T: +44 (0)20 7930 0777
                                               M: +44 (0)7941 340 436


The Neptune Minerals website is www.neptuneminerals.com

CHIEF EXECUTIVE'S STATEMENT

I am pleased to  report the interim results  of Neptune Minerals  Plc
("the Company" or "Neptune") for the six-month period to 31  December
 2007.

NEW ZEALAND EXPLORATION
In  August  2007  following  the   conclusion  of  the  Kermadec   07
exploration program, Neptune announced that it had discovered two new
hydrothermally inactive SMS zones on  the Rumble II West seamount  in
the Company's New  Zealand prospecting  licence PL39-195  (Kermadec).
The  Company  is  currently  preparing  to  lodge  a  mining  licence
application over this area to the New Zealand government.

Also  in  August  2007,  Neptune  completed  its  third  New  Zealand
exploration program using initial IPO funds, Colville-Monowai 07. The
Company acquired  20,000km2  of  ship-mounted  multi-beam  bathymetry
("swath") data over  PL39-194 (Monowai)  and 8,000km2  of swath  data
over PL39-205 (Colville).

This data  has  been  analysed  as  part  of  a  thorough  structural
interpretation of  Neptune's New  Zealand tenements.  The  structural
review highlighted at least 150 high-priority structural targets  for
follow up  in Project  Trident  and formed  the technical  basis  for
Neptune's new application areas within New Zealand waters.

Neptune is  currently  undertaking a  baseline  environmental  impact
assessment of  the  Kermadec  licence area  for  its  Mining  Licence
Application ("MLA").   Monitoring  and  measuring activities  of  the
Environmental Impact Assessment ("EIA") associated with the MLA  will
be run off the RV Tangaroa later in 2008.

Neptune is awaiting  completion of a  conceptual engineering  scoping
study commissioned with the  French marine engineering firm,  Technip
and Dutch dredging company, Boskalis in October 2007. This study  was
designed  to  review  and   assess  existing  marine  equipment   and
technologies  for  SMS  mining  and  lifting,  to  be  assessed   for
preliminary   costing,   operational   reliability,   capacity    and
environmental issues. Neptune will evaluate  this report with a  view
to proceeding to pilot testing of the Kermadec prospect and a  mining
pre-feasibility study.

PROJECT TRIDENT
Neptune announced in August 2007 its intention to undertake a program
of  continuous  exploration  called  Project  Trident,  to  focus  on
Neptune's New Zealand tenements. Neptune is progressing  negotiations
with potential partners to farm  into Neptune's New Zealand  licences
and fund Project Trident through a joint venture.

Neptune  signed  a  Letter   of  Intent  in   March  2008  with   C&C
Technologies, one of the world's leading marine survey companies, for
the provision of autonomous  underwater vehicle survey, sampling  and
vessel charter services.  The L.O.I. commits both parties to contract
negotiations and project preparations towards Project Trident.

EXPLORATION LICENCE GRANTS
In October 2007, Neptune was granted 10 prospecting licences ("PL's")
in the  EEZ  of Vanuatu  covering  a total  area  of 914km2,  and  in
November 2007, was granted seven exploration licences ("EL's") in the
EEZ of Papua New  Guinea covering a total  area of 13,345km2. In  the
past 12 months, Neptune  has increased its  tenement acreage by  650%
and now has 278,000  km2 of SMS-prospective  seafloor granted in  New
Zealand, Papua New  Guinea, the  Federated States  of Micronesia  and
Vanuatu.

Vanuatu licences
Prospecting licences PL  1627-1636 were granted  to Neptune  Minerals
(Vanuatu) Limited,  a wholly-owned  subsidiary of  the Company.  Each
licence has been  granted for  an initial three-year  period, with  a
work commitment during that time to complete high resolution  surface
mapping  and  geophysics  and  to  collect  surface  and  sub-surface
samples. The cumulative work commitment costs for these licences  are
US$28,000 in year 1 and US$1.6 million in year 2.

The tenements are contiguous  and cover the Gemini-Oscostar  Volcanic
Complex, part of the New Hebrides Arc and situated south of Aneityum,
the southernmost island  of Vanuatu.  Exploration over  this area  by
researchers from Australia's  Commonwealth Scientific and  Industrial
Research Organisation  ("CSIRO")  in 2004,  recovered  sulphide  rock
samples by  dredging and  detected  hydrothermal activity.  Both  are
strong indications of the presence of SMS mineralisation.


PNG licences
Seven licences  were granted  to Neptune  Minerals (PNG)  Limited,  a
wholly-owned subsidiary of the Company. Each has been granted for  an
initial two-year  period, with  a work  commitment to  complete  high
resolution surface  mapping  and geophysics  as  well as  to  collect
surface samples during  that time.   The  cumulative work  commitment
costs for these  licences are  US$0.6 million  in year  1 and  US$1.2
million in year 2.

Five tenements (EL 1554 to  EL 1558) cover prospective seamounts  and
other features that surround, and are submerged parts of, the  island
groups that  comprise the  Tabar-Feni Arc.  Numerous epithermal  gold
deposits occur on  these islands,  including the  Ladolam Deposit  on
Lihir Island,  one  of  the world's  largest  gold  resources  (43Moz
contained gold) and producing at 750Koz gold per year; and the 2.4Moz
Simberi gold deposit in the Tabar Islands where gold production began
in late 2007.

The target is  high-grade epithermal gold  mineralisation similar  to
that sampled and drilled by joint British and German research cruises
on Conical Seamount 10km to the south of Lihir Island, and covered by
Neptune's licence (EL 1425). Previous grab-sampling at the summit  of
Conical   Seamount   in   1999   and   2002   recovered   distinctive
epithermal-style polymetallic veins with gold grades reaching  230g/t
Au, averaging 25g/t Au from 40 samples.

Research drilling at the summit  plateau of Conical Seamount in  2002
(39 holes, 31% average recovery) confirmed the sub-seafloor extent of
surface gold mineralisation and associated alteration to depths of at
least 4.5m. Drill  core samples of  clay-silica alteration  contained
average gold grades  of 14.2g/t Au  over a length  of about 30cm  and
appear to be part of a more extensive gold zone.

Two tenements (EL 1541 Klotsu and EL 1542 Namel) are situated in  the
central Bismarck Sea,  adjacent to a  granted EL which  has been  the
subject  of  intensive  commercial  SMS  exploration  and  scientific
research. Both  tenements cover  structural features  related to  SMS
mineralisation processes in the adjacent EL.

NEW VENTURES APPLICATIONS
In November 2007, Neptune lodged three PL applications in the EEZ  of
New Zealand. The three licences,  numbered PLA 50-468 to PLA  50-470,
have a  total area  of 84,880  km2 and  cover SMS  prospective  areas
adjacent to  Neptune's  granted PL  39-194  (Monowai) and  PL  39-205
(Colville).

ADDITIONS TO NEPTUNE MANAGEMENT TEAM
In October 2007,  Neptune strengthened its  management team with  the
appointments of  Glen Parsons  as Corporate  Development Manager  and
Glenn Creed as Environment Manager.

Glen Parsons has over 15 years' international experience in corporate
finance, treasury and general  management.  During  this time he  has
built new teams and divisions within various organisations. He became
an executive  director  of  RFC Corporate  Finance  Ltd,  a  minerals
resources investment bank.   Glen  has specific AIM  experience as  a
nominated advisor  (Nomad) and  has been  involved with  a number  of
successful equity and debt raisings for junior and developing  mining
companies.

Glenn Creed  has  13  years' experience  in  environment  and  safety
management within the  mining and  construction industry,  throughout
Australia and internationally.  He was part  of Placer Dome's  global
EHS  team,  and  as  such  was  responsible  for  the   environmental
management of  Placer  Dome's deep  sea  mineral exploration.    This
involved  the  design,  coordination  and  management  of  deep   sea
monitoring and scientific research programs.  Glenn has also held the
position of Vice  President of Sustainability  for Nautilus  Minerals
Inc.

EVENTS SUBSEQUENT TO THE END OF THE REPORTING PERIOD
During the first  quarter of 2008,  Neptune further strengthened  its
management team  with  the  appointment of  Contracts  &  Procurement
Manager,  Peter  Wong  and  New  Zealand  Country  Manager,  Campbell
McKenzie.

Peter Wong  has 20  years' experience  in the  fields of  supply  and
contract  management,   procurement,  outsourcing   and   engineering
construction cost management. In the last 15 years, he has worked  in
the oil and gas industry in  the United Arab Emirates, Yemen,  Egypt,
Brunei, PNG and Russia. He has successfully executed and managed  the
contracting, procurement and supply chain management for onshore  and
offshore drilling and construction projects.

Campbell McKenzie has 12 years'  experience in the minerals  industry
in both private and public sectors. He was previously manager of  the
minerals unit at the Crown Minerals Group of the Ministry of Economic
Development of New  Zealand, where he  led a team  that assessed  and
made recommendations on all applications made to prospect, explore or
mine the  NZ  mineral  resource  estate. He  has  also  worked  as  a
geologist with several  Australian-based companies over  a period  of
nine years.

KEY OBJECTIVES
The Company's  key  objectives remain  to  grow Neptune's  value  and
business  model  by  refining  the  exploration  techniques  for  SMS
deposits; by adding  prospective SMS areas  to Neptune's  exploration
portfolio and by  attracting strategic  partnerships and  exploration
joint venture partners.

CASH POSITION
Neptune's cash position as at 31  December 2007 was �3.1 million.  As
at the end  of February  2008 the  Company's cash  position was  �2.6
million.



Dr Simon McDonald
CEO and Managing Director
25 March 2008


NEPTUNE MINERALS PLC
CONSOLIDATED INCOME STATEMENT
For the six months ended 31 December 2007

                                  Six months  Six months    Financial
                                       ended       ended         Year
                                 31 December 31 December        ended
                                        2007        2006 30 June 2007
                                 (unaudited) (unaudited)    (audited)
                            Note       �'000       �'000        �'000
Administrative expenses              (1,219)       (552)        (864)
Other operating expenses                 (9)           -         (13)

Operating Loss                       (1,228)       (552)        (877)

Investment income                        111         109          228

Loss for the period before
taxation                             (1,117)       (443)        (649)

Taxation                                   -           -            -

Loss after taxation                  (1,117)       (443)        (649)


Loss per share (in pence)
Basic                        6        (1.7p)        (1p)       (1.1p)

Diluted                      6        (1.0p)        (1p)       (1.1p)


The notes on pages 5 to12 form part of these financial statements.
The income  statement  has  been  prepared  on  the  basis  that  all
operations are continuing.



NEPTUNE MINERALS PLC
CONSOLIDATED BALANCE SHEET
As at 31 December 2007

                                       As at       As at        As at
                                 31 December 31 December 30 June 2007
                                        2007        2006
                                 (unaudited) (unaudited)    (audited)
                            Note       �'000       �'000        �'000
Assets

Non-current assets:
Intangible assets            7         6,315       2,583        4,336
Property, plant and
equipment                                 26          21           17
                                       6,341       2,604        4,353
Current assets:
Trade and other receivables               15           9          138
Cash and cash equivalents              3,093       4,731        5,927
                                       3,108       4,740        6,065

Total assets                           9,449       7,344       10,418

Equity and liabilities:

Capital and reserves
Share capital                9           330         288          323
Share premium                10       11,521       8,789       11,119
Share option  reserve        10          817         392          392
Retained profits                     (3,355)     (2,161)      (2,460)

Total equity                           9,313       7,308        9,374

Current liabilities
Trade and other payables                 136          36        1,044

Total liabilities                        136          36        1,044

Total equity and
liabilities                            9,449       7,344       10,418


The notes on pages 5 to 12 form part of these interim financial
statements.
 Approved by the Board on 25 March 2008 and signed on its behalf by
Simon McDonald.


DIRECTOR:  _________________________________




NEPTUNE MINERALS PLC
CONSOLIDATED STATEMENT OF CHANGES IN EQUITY
For the six months ended 31 December 2007

                               Share   Share   Share Retained   Total
                              option Capital Premium Earnings
                             reserve
                               �'000   �'000   �'000    �'000   �'000

Balance at 30 June 2006          392     288   8,789  (1,946)   7,523
(audited)
Exchange differences on
translating foreign                -       -       -      228     228
operations
Loss for the period                -       -       -    (443)   (443)
Share option benefit               -       -       -        -       -
Ordinary Shares issued             -       -       -        -       -
Premium on shares issued           -       -       -        -
Balance at 31 December 2006      392     288   8,789  (2,161)   7,308
(unaudited)
Exchange differences on
translating foreign                -       -       -     (93)    (93)
operations                         -       -       -    (206)   (206)
Loss for the period                -       -       -        -       -
Share option benefit               -       5       -        -      35
Ordinary shares issued             -       -   2,330        -   2,330
Premium on shares issued
Balance at 30 June 2007          392     323  11,119  (2,460)   9,374
(audited)

Exchange differences on
translating foreign                -       -       -      222     222
operations
Loss for the period                -       -       -  (1,117) (1,117)
Performance share benefit
(note 10 (c))                      -       3     205        -     208
Share option benefit (note       426       -       -        -     426
10 (a))
Ordinary Shares issued (note       -       4       -        -       4
9)
Premium on shares issued           -       -     196        -     196


Balance at 31 December 2007      818     330  11,520  (3,355)   9,313


The notes on pages 5 to 12 form part of these interim financial
statements.

NEPTUNE MINERALS PLC
CONSOLIDATED CASH FLOW STATEMENT
For the six months ended 31 December 2007

                                               Six month    Financial
                                  Six months       ended         Year
                                       ended 31 December        ended
                            31 December 2007        2006 30 June 2007
                                 (unaudited) (unaudited)    (audited)
                                       �'000       �'000        �'000
Operating Activities
Operating loss                       (1,228)       (552)        (877)
Adjustment for:
Performance Share Benefit                208           -            -
Share option benefit                     426           -            -
Foreign Exchange                       (179)           -        (194)
Depreciation                               9           1           13

Operating cash flow before
changes in working capital             (764)       (551)      (1,058)
Increase in trade and other
receivables                              123          93         (36)
Increase in trade and other
payables                               (908)       (118)          890

Net cash used in operating
activities                           (1,549)       (576)        (204)

Investing Activities
Purchase of property, plant
and equipment                           (18)         (4)          (9)
Intangibles                          (1,694)       (223)      (1,581)

Net cash used in investing
activities                           (1,712)       (227)      (1,590)

Financing activities
Interest received                        111         109          228
Issue of share capital                   200           -        2,530
Cost of share issue                        -           -        (165)

Net cash from financing
activities                               311         109        2,593

Net increase in cash and
cash equivalents                     (2,950)       (694)          799

Cash and cash equivalents
at beginning of period                 5,927       5,197        5,197

Effect of foreign exchange
rate changes                             116         228         (69)

Cash and cash equivalents
at 31 December 2007                    3,093       4,731        5,927


 The notes on pages 5 to 12 form part of these interim financial
statements.

- ---END OF MESSAGE---





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