AUGUST 1999 - RELEASES
WEEKLY DRILLING REPORT   (31/8/99)

Roc Oil Company Limited ("ROC") hereby advises that since the last weekly drilling report the Saltfleetby-4 well in PEDL 005 (ROC-operated with 100% working interest), onshore UK has reached a Total Depth of 3,168 metres (2,303 metres true vertical depth) and 2 7/8 inch production liner has been run. As of 9.00 am on Monday, 30 August 1999 (UK time), the well was running perforating guns ahead of perforating the upper part of the gas reservoir.

The drilling program for Saltfleetby-4 required a horizontal section of approximately 300 metres to be drilled in the lower part of the Saltfleetby gas reservoir and the well achieved this objective on schedule and within budget.

Other current ROC activities include:

The 1,035 km 2-D Jochi Seismic Survey, which commenced on 19 August 1999, in PEL 97 (ROC-operated with 100% working interest), in Mongolia's Gobi Desert, had acquired a total of 243 km as of 30 August 1999.

Also in Mongolia, ROC transported a further 7,330 barrels of oil to its agreed sale point on the Mongolian-Chinese border as part of an oil export process that is expected to generate total ROC 1999 sales revenues in the order of A$1 million.

Dr John Doran Chief Executive Officer

For further information please contact: Dr John Doran on 61 2 8356 2000

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ACTIVITIES UPDATE   (24/8/99)

Roc Oil Company Limited ("ROC") hereby advises that since the last weekly drilling report the Saltfleetby-4 well in PEDL 005 (ROC-operated with 100% working interest), onshore UK, set 5 inch casing at 2,718 metres drill depth (2,305 metres true vertical depth). As of 9.00 am on Monday, 23 August 1999 (UK time), the well was drilling ahead in the lower part of the gas reservoir at 2,745 metres drill depth. The drilling program for Saltfleetby-4 requires a horizontal section of approximately 300 metres to be drilled in this lower part of the Saltfleetby gas reservoir.

Other current ROC exploration activities include:

The 1,035 km 2-D Jochi Seismic Survey in PEL 97 (ROC-operated with 100% working interest) in Mongolia's Gobi Desert, commenced on 19 August 1999. Acquisition is proceeding at a rate of about 18km /day.

The 55 sq km 3-D Seismic Survey in PEDL 005 (ROC-operated with 100% working interest), immediately east of the Saltfleetby Gas Field is scheduled to commence in mid-September 1999, permitting has already started.

The 829 km 2-D Al Marmoutha Seismic Survey, acquired in the FDM Reconnaissance Licence (ROC-operated with 100% working  interest), offshore Morocco, in April-May 1999, is being processed with completion scheduled for mid-September 1999.

All of the above seismic surveys are designed to mature structural leads to drill status.

Dr John Doran Chief Executive Officer

For further information please contact: Dr John Doran on 61 2 8356 2000

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ACTIVITIES UPDATE   (17/8/99)

Roc Oil Company Limited ("ROC") hereby advises that the Saltfleetby-4 well, which commenced drilling on 4 July 1999, is preparing to set 5 inch casing at 2,718 metres drill depth (2,305 metres true vertical depth) as of 09.00 am on Monday, 16 August 1999 (UK time).

During the last seven days the well encountered the top of the Saltfleetby gas reservoir at 2,494 metres drill depth, approximately 2 metres high to the top of the gas reservoir in Saltfleetby-1z which is 0.4 km to the east. Based on information gathered while drilling, including gas shows and penetration rates, the reservoir penetrated thus far in Saltfleetby-4 appears to be comparable to the equivalent part of the reservoir in Saltfleetby-1z.

The drilling program for Saltfleetby-4 requires a horizontal section of approximately 360 metres to be drilled in the lower part of the Saltfleetby gas reservoir which is yet to penetrated by the well.

Dr John Doran Chief Executive Officer

For further information please contact: Dr John Doran on 61 2 8356 2000

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ACTIVITIES UPDATE    (10/8/99)

This release is intended to udpate shareholders with regard to activities undertaken by Roc Oil Company Limited ("ROC") and its recently acquired, 100% owned, subsidiary Morrison Middlefield Resources (UK) Limited, subsequent to 21 June 1999 when the ROC Prospectus was registered with the Australian Securities and Investments Commission.

During the seven week period under review, a number of events have occurred which reflect the pro-active nature of ROC and its UK subsidiaries. Although no single event is regarded as being material, collectively, the activities represent a data set which ROC believes should be in the public domain.

1. UNITED KINGDOM ASSETS

1.1 ROC's acquisition of Morrison Middlefield Resources Limited's (MMRL) United Kingdom (UK) Assets

The acquisition was completed in Calgary, Canada, on 29 July 1999, in accordance with the schedule laid out in the ROC Prospectus. As a result of the acquisition, ROC now owns 100% of MMRL's UK assets through wholly owned subsidiaries which have been renamed to reflect ROC's ownership, including:
MMRL (UK) Limited is now known as Roc Oil (Europe) Limited
Candecca Resources Limited is now known as Roc Oil (UK) Limited
Cambrian Exploration Limited is now known as Roc Oil (CEL) Limited

1.2 The Saltfleetby Gas Development

This 100% owned and operated development is currently ROC's core project. During the period under review the project progressed on budget and on schedule. The expectation remains that first gas will be produced in November 1999, as stated in the ROC Prospectus. Specific Saltfleetby activities that warrant special mention include:
Excellent progress has been achieved with regard to the 6" intrafield flowlines and the 8 km 10" pipeline, linking the Saltfleetby Gas Field to the Conoco operated gas processing plant at Theddlethorpe. This part of the development project is due to be completed on schedule by end September 1999.
Detail design is virtually complete on the field facilities and fabrication activities have commenced. Work is on schedule and is also due for completion at the end of September 1999.
The project facilities being installed within the Theddlethorpe site are being managed by Conoco, the gas plant operator. Work is proceeding on schedule and the expectation is that first gas should be flowing by November 1999, as indicated in ROC's Prospectus.

1.3 Drilling

On 4 July 1999 the Saltfleetby-3 well flowed on a short duration test at a rate up to 16 mmscfd which was constrained by surface facilities. It has been estimated that Saltfleetby-3 could be capable of initially flowing up to 20 mmscfd when appropriate production facilities are installed. In general terms, Saltfleetby-3 is regarded as the best well drilled thus far in the Saltfleetby Gas Field.

The Saltfleetby-4 well, approximately 2 km to the west of Saltfleetby-3, is currently drilling ahead and is expected to encounter the top of the gas reservoir later this month. The well is on budget and on schedule.

The top of the Brindlsey Abdy Formation, which unexpectedly contained oil in Saltfleetby-3, was encountered by the Saltfleetby-4 well at a vertical depth 7 metres high to the base of the oil bearing formation in Saltfleetby-3. In Saltfleetby-4 log information suggests that the uppermost part of the Brindsley Abdy Formation may possibly be hydrocarbon bearing but the remainder of the formation appears to be both water wet and tight compared to Saltfleetby-3. The regional geological setting of the Brindsley Abdy Formation is known to be complex and therefore, in the absence of additional data, it is premature to assign any commercial significance to the oil accumulation in the Brindsley Abdy Formation at Saltfleetby.

1.4 Production

July 1999 oil production was approximately 2,500 bopd. Total oil production during the month was slightly affected by an increased water cut at Keddington-1 that may be due either to the encroachment of the water table or water breakthrough following a previous reservoir-frac job.

As stated in the Prospectus, MMRL had previously put in place an oil hedging programme as a result of which 2,000 bopd have been effectively forward sold from April 1999 at a Brent oil price of US$13.00/bbl, not including the US$0.35/bbl premium which attaches to the production. This hedging arrangement terminates on 31 December 1999. The price received for the balance of the oil produced in July 1999 averaged US$19.30/bbl. The equivalent spot price received by ROC in early August 1999 was US$19.70/bbl.

ROC's Prospectus did not make any specific reference either to July oil production or to the receipt of July production revenue because the transaction was not expected to close until the end of July. However, both the spot price and forward sale price received for oil produced in July are in excess of the US$12.50/bbl August-December oil price forecast used in the ROC Prospectus.

1.5 Seismic

The latest seismic mapping of the Saltfleetby Gas Field indicates that the eastern edge of the field may lie beyond the boundary of the existing 3D seismic survey. Existing 2D seismic, located to the east of the field, suggests that any extension of the field in that direction is unlikely to be very large, although even a small field extension could be developed profitably because of the associated field infrastructure. Because of this, ROC intends to acquire 55 sq km of 3D seismic to the east of the Saltfleetby Field, starting in late September 1999, for a total cost in the order of A$1.5 million, including processing.

1.6 U.K. North Sea

At the moment, ROC's only active interest in the UK North Sea is its collective 12.5% interest in the Kyle Oil Field Development, which includes 1.25% held through ROC's 50% ownership of Croft (UK) Limited ("Croft"). The Kyle Development is operated by Ranger Oil (UK) Limited ("Ranger") and the other non-operators, apart from ROC, are Bow Valley Petroleum (UK) Limited ("Bow Valley"), Premier Oil plc and Croft. Until recently the development concept being pursued by the Kyle Joint Venture required the tie-in of the Kyle Field to the Banff Ramform Floating Production and Storage Facility (FPSO). The Banff Ramform FPSO is managed by Norwegian-owned PGS Floating Production (UK) Limited while the Banff Field is operated by the US-owned Conoco (UK) Limited.

Just over a month ago, on 9 July 1999, the head offices of Ranger and Bow Valley issued separate media releases which advised that, as a result of the continuing delays at the Banff Ramform FPSO, the Kyle Joint Venture was actively considering the use of alternate production facilities for the Kyle Field with a view to preserving the early first oil production schedule. During the last month progress has been made with regard to identifying the preferred early production alternatives, one of which remains the tie-in to the Banff Ramform FPSO. A final decision is likely to be made within the next two or three months in consultation with the UK Department of Trade and Industry.

While a delay beyond the first Kyle oil date forecast in ROC's Prospectus (December 1999), cannot be ruled out at the moment that date continues to be regarded as a valid target.

1.7 Gas Storage Potential

ROC's Prospectus makes only a passing reference to the gas storage potential of the Saltfleetby Gas Field. However, since the Prospectus was finalised ROC has given some further thought to this potential following informal discussions with appropriate experts. As a result of these discussions the company has decided to accelerate a Feasibility Study to determine the commercial potential of gas storage at Saltfleetby.

2. OTHER INTERNATIONAL ASSETS

2.1 Mongolia

ROC continues to intermittently produce oil from its field facility in the East Gobi Basin and to periodically sell it to China via rail car export. The most recent series of export oil sales was completed on 9 July 1999, bringing the total oil produced and exported this year to approximately 28,500 barrels. The sale price is calculated with regard to the prevailing price of internationally traded crude oil. As a result, the price received by ROC at the Mongolian-Chinese border for the July shipment was US$15.55/bbl. Although the total revenue is relatively small within ROC's overall corporate context, the fact that the company has established a successful sale and export process characterised by virtually immediate invoice payment by the Chinese buyers is significant and confirms that a commercial framework exists which would allow larger volumes of oil to be sold if exploration success is achieved.

Prior to the end of August, ROC intends to commence the 1,035 km Jochi 2D Seismic Survey in Mongolia's Gobi Desert using the same seismic contractor as last year, APCO/CGG. The anticipated cost of the survey, including processing, is expected to be about A$4.6 million. The main purpose of the survey is to detail large leads identified by the 1998 seismic survey with the intent that the more attractive prospects will be matured to drilling status.

APCO/CGG have agreed that the Jochi Seismic Survey will meet the obligations of the Gulf Canada Resources Limited ­ ROC Joint Venture under the Agreement between APCO/CGG and the Joint Venture. Accordingly, no early termination payment will be required to be made and the potential litigation referred to in ROC's Prospectus will not arise.

2.2 Senegal

On 6 July 1999, ROC, on behalf of itself and its co-venturer Woodside Petroleum Limited, signed a second Memorandum of Understanding ("MOU") with the relevant government authorities in Senegal. As a result, ROC will continue to review exploration opportunities in that country.

2.3 Morocco

Processing of the 829 km 2D seismic, which ROC acquired offshore Morocco in April-May 1999, is continuing on schedule with completion expected by the end of August 1999. The company continues to have a very positive view of the hydrocarbon potential of its area offshore from Morocco.

2.4 Malta

A seismic inversion study of the 3D data set is being undertaken in Denmark by Odegaard A/S.

3. CORPORATE

3.1 Capital

Structure Following the company's successful completion of both the acquisition of MMRL'''''s UK assets and its initial public offering ("IPO"), in which it raised A$150 million through the issue of 75 million fully paid, ordinary, shares, ROC's current capital structure is summarised as follows:

Fully paid ordinary shares                           105,994,060

Shareholders' Options on Issue (1)           7,698,830
Employee Options on Issue      (2)          23,074,910

(1) As detailed in ROC's Prospectus, shareholders' options have been issued at an exercise price of $2.30 and are subject to escrow for periods of 1 or 2 years.

(2) Consistent with intentions expressed in ROC's Prospectus to the effect that the Employee Share Option Plan (ESOP) was to be used to attract new staff and incentivise current staff, a further 970,000 employee options at an exercise price of $2.00 have been issued to ROC's new UK and Australian employees under the ESOP in addition to the number shown in ROC's Prospectus. All options issued under the ESOP are not exercisable for two years. Approximately 42% (2.2 million options) of the ESOP remains unallocated and the company has no intention of making any further significant allocation in the near future.

3.2 Financials

Following closing of the MMRL transaction and payment of costs associated with the IPO, ROC currently has more than A$50 million in cash reserves and a net-debt to equity ratio of approximately 10% based on the current net-debt of A$17 million. ROC received subscriptions well in excess of the A$40 million maximum oversubscription which the company was able to accept. The oversubscriptions will be used to sensibly accelerate the company's exploration, appraisal and development programmes, particularly onshore UK.

3.3 Appointment of Mr B C Hung as General Manager   Legal & Administration

ROC is pleased to advise that Mr Bun Hung has accepted a senior executive position with the company. Mr Hung was heavily involved with the MMRL acquisition process in his capacity as a consultant to ROC. Mr Hung was most recently Managing Director of Cairn Energy (Asia) Ltd, prior to which he held a number of senior executive positions with Command Petroleum Limited and Nomeco Oil and Gas.

4. COMMENTS

Commenting on the activities referred to above ROC's CEO, Dr John Doran, stated that:

"Seven weeks is a long time in the international oil business, particularly if you are a pro-active company such as ROC. Two events stand head and shoulders above all the other activities during the review period: the continuing good progress being made at the Saltfleetby Development and the successful raising of A$150 million via ROC's public listing on the Australian Stock Exchange. These events, together with the company's current and anticipated oil production in the UK, represent an excellent foundation upon which to build a meaningful oil company over the next few years.

ROCıs Board and Management would like to sincerely thank all of the company's Sydney-based workforce for their extraordinary effort during the last six months when the acquisition was being put together. ROC's Board and Management would also like to welcome into the company all of MMRL's UK-based employees who also exerted a huge effort in order to ensure that the acquisition proceeded smoothly."

Dr John Doran Chief Executive Officer

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