Oromin Explorations Ltd.
TSX VENTURE : OLE
OTC Bulletin Board : OLEPF

Oromin Explorations Ltd.

July 11, 2007 19:13 ET

Oromin Explorations Ltd.: Ongoing 75,000 Metre Drill Program Demonstrates Excellent Continuity and Size Expansion at Golouma West, South and Masato Gold Deposits

New Discoveries Add Potential

VANCOUVER, BRITISH COLUMBIA--(Marketwire - July 11, 2007) - Oromin Explorations Ltd. ("Oromin") (TSX VENTURE:OLE)(OTCBB:OLEPF) -

Highlights

- Golouma West gold deposit extended to a minimum of 1,000 metres at surface with significant new intersections including:

- 15 metres of 8.52 g/t gold in RC-92

- 40 metres of 3.15 g/t gold in RC-106

- 32 metres of 6.43 g/t gold in RC-114

- New high-grade trenching and drillng results have extended Golouma South mineralization an additional 250 metres to its current minimum 650 metre strike length.

- Masato Deposit and Masato North target extended by drilling with significant new intersections including:

- 22 metres of 2.44 g/t gold in DH-95

- 14 metres of 2.90 g/t gold in DH-112

Oromin Explorations Ltd. ("Oromin") is pleased to provide an exploration up-date at the Sabodala Property in Senegal.

In addition to stepout and infill drilling results from the Golouma West, Golouma South, Masato and Masato North deposit areas, additional encouraging trenching results have been received from the Masato North target. New discoveries have also been confirmed by trenching at the Sekoto and Kinemba Targets, as well as at Golouma South Extension where favourable trench results have extended mineralization an additional 250 metres south beyond previous drilling. Please refer to Oromin's May 4, 2007 press release which discusses average grades and lengths of the Golouma West, South and Masato deposits.

Oromin's 2007 exploration program is focused on resource delineation of Sabodala's numerous gold zones and deposits with more than 75,000 metres in 450 holes planned. The results from its ongoing property-wide exploration program continue to support Oromin's model of multiple gold deposits being located within the Sabodala Property. Please see attached map for locations.

GOLOUMA WEST GOLD DEPOSIT

This deposit has been traced over 1,000 metres on surface and to 300 metres at depth and remains open in all directions. Oromin is currently drilling the deposit at 40 metre centres using an RC drill rig to a 200 to 250 metre depth followed by deeper drilling with diamond core rigs. Newly drilled mineralized intersections are listed in the attached schedule; the most significant of which are:

- 23 metres of 4.15 g/t gold in RC-76

- 6 metres of 10.02 g/t gold in RC-84

- 15 metres of 8.52 g/t gold in RC-92

- 40 metres of 3.15 g/t gold in RC-106

- 32 metres of 6.43 g/t gold in RC-114(i)

(i) Hole RC-114 is the westernmost hole drilled at Golouma for which results are available. However, additional drilling to the west of RC-114, for which results are pending, has also encountered Golouma West style mineralization.

GOLOUMA NORTHWEST TARGET

Three core holes were completed at the Golouma Northwest Target during the up-date period. Ongoing interpretations indicate that the Golouma West Gold Deposit and the Golouma Northwest target appear to be merging in an area west of drill sections 6+00 and 6+40 west. Drilling results from Golouma Northwest are listed in the attached schedule, and include 11 metres of 6.04 g/t gold in DH-118.

GOLOUMA SOUTH GOLD DEPOSIT EXTENSION

A series of excavator trenches extending for 250 metres southward beyond previous drilling in this area (3.36 g/t gold over 4 metres in DH-87) successfully encountered the extension of Golouma South mineralization. TRX-183 located 75 metres south of DH-87 encountered two mineralized intervals of 8.90 g/t gold over 2 metres and 25.65 g/t gold over 8 metres (including 99.83 g/t gold over 2 metres). TRX-187, located 250 metres south of DH-87, intersected an "on trend" mineralized zone grading 35.84 g/t gold over 2 metres. Thus far, Oromin has completed one core hole (DH-122) and one reverse circulation hole (RC-110) at the Golouma South extension. Drilling results from Golouma South are listed in the attached schedule, and include 4 meters of 10.24 g/t gold in DH-122.

MASATO GOLD DEPOSIT

This deposit is coincident with a large and strong gold-in-soil geochemical anomaly 1.8 kilometres in length by up to 1.2 kilometres in width. It is connected disjointedly with the Masato North target and is located 1.2 kilometres due east of the 1.9 million ounce Sabodala Gold deposit owned by Mineral Deposits Limited ("MDL") that is being readied for production (see MDL May 4, 2007 news release). This large geochemical anomaly is also coincident with 3 parallel I.P. chargeability anomalies of which only the westernmost has been drilled to date.

Newly drilled mineralized intersections are listed in the attached schedule; the most significant of which are:

- 16 metres of 2.15 g/t gold in DH-106

- 13 metres of 2.35 g/t gold in DH-109

- 14 metres of 2.90 g/t gold in DH-112

- 15 metres of 2.64 g/t gold in DH-116

MASATO NORTH TARGET

Masato North is presently defined as a strong gold-in-soil geochemical anomaly measuring a minimum of 800 metres in length. It is connected disjointedly with the Masato deposit; however, interpretations suggest that these may merge as one. Recent trenching results from Masato North include: 1.15 g/t gold over 8 metres in TRX-167, 2.94 g/t gold over 20 metres in TRX-168, 2.53 g/t gold over 36 metres in TRX-169 and 2.35 g/t gold over 14 metres in TRX-172.

Newly drilled mineralized intersections are listed in the attached schedule; the most significant of which are:

- 22 metres of 2.44 g/t gold in DH-95

- 10 metres of 2.18 g/t gold in DH-96

- 5 metres of 3.26 g/t gold in DH-105

REGIONAL EXPLORATION DISCOVERIES

In addition to the extensive reverse circulation and core drilling programs, regional exploration is also underway at a variety of favourable target areas throughout the Sabodala Property. Highlights from this regional exploration program include:

- 3 metres of 10.13 g/t gold from the initial drilling completed at the Kobokoto target, (DH-108).

- 6 metres of 5.95 g/t gold from TRX-154 at the Sekoto target.

- 8 metres of 1.11 g/t gold from a hand trench at the Kinemba target.

- Initial excavator trenching at the Dendifa West target has exposed favourable veining, alteration and structure over good widths. Results are pending.

Fieldwork was carried out under the supervision of Gerald McArthur P. Geol., a "qualified person" for the purposes of National Instrument 43-101, who has also verified the data disclosed in this news release. TSL Laboratories in Saskatoon, Saskatchewan carried out all assaying.

To find out more about Oromin Explorations Ltd. visit www.oromin.com.

On behalf of the Board of Directors of OROMIN EXPLORATIONS LTD.

Chet Idziszek, President

To view the map accompanying this release please click on: http://www.ccnmatthews.com/docs/ole0711map.jpg



------------------------------------------------------------------------
Golouma West Gold Deposit Mineralization Intersections
------------------------------------------------------------------------
Drill Grid Azimuth/ From - To Interval Gold
Hole Section Co-ordinate Dip (m) (m) (g/t)
------------------------------------------------------------------------

------------------------------------------------------------------------
RC-72 360W 3564N/4698E 015/-60 31-36 5 2.12
41-50 9 1.86
73-79 6 1.38
------------------------------------------------------------------------
RC-73 360W 3493N/4680E 015/-60 126-131 5 1.17
156-159 3 1.56
------------------------------------------------------------------------
RC-74 360W 3455N/4669E 015/-60 2-5 3 2.16
57-60 3 2.24
221-225 4 5.10
incl. 223-224 1 17.66
------------------------------------------------------------------------
RC-75 360W 3416N/4658E 015/-60 87-91 4 1.93
127-131 4 5.30
157-163 6 6.60
incl. 158-159 1 28.40
------------------------------------------------------------------------
RC-76 400W 3571N/4658E 015/-60 20-36 16 3.09
incl. 33-35 2 9.69
64-87 23 4.15
incl. 75-77 2 10.17
------------------------------------------------------------------------
RC-77 400W 3537N/4650E 015/-60 97-99 2 3.15
106-115 9 2.47
118-121 3 1.64
124-127 3 1.46
132-135 3 2.48
143-152 9 3.03
incl. 151-152 1 11.59
------------------------------------------------------------------------
RC-78 400W 3500N/4640E 015/-60 123-125 2 2.78
183-188 5 1.56
191-212 21 3.95
incl. 194-201 7 7.79
------------------------------------------------------------------------
RC-79 440W 3585N/4620E 015/-60 6-10 4 5.94
incl. 7-8 1 16.74
41-45 4 6.19
incl. 43-44 1 13.51
54-61 7 1.75
------------------------------------------------------------------------
RC-80 440W 3550N/4610E 015/-60 98-101 3 2.14
132-143 11 2.11
------------------------------------------------------------------------
RC-81 440W 3510N/4600E 015/-60 164-174 10 1.67
192-200 8 1.31
205-216 11 2.48
------------------------------------------------------------------------
RC-82 480W 3545N/4570E 015/-60 119-121 2 3.43
151-156 5 1.82
------------------------------------------------------------------------
RC-84 520W 3588N/4537E 015/-65 41-47 6 10.02
incl. 44-45 1 40.91
87-91 4 1.35
------------------------------------------------------------------------
RC-88 560W 3615N/4505E 015/-60 60-66 6 1.64
------------------------------------------------------------------------
RC-89 360W 3595N/4707E 015/-50 0-21 21 3.42
incl. 9-13 4 7.58
------------------------------------------------------------------------
RC-90 360W 3530N/4690E 015/-60 103-114 11 3.47
123-137 14 4.64
incl. 131-134 3 9.22
------------------------------------------------------------------------
RC-91 460W 3550N/4590E 015/-60 102-107 5 8.86
incl. 103-106 3 13.11
141-144 3 3.47
150-160 10 1.35
196-197 1 32.68
------------------------------------------------------------------------
RC-92 640W 3654N/4425E 195/-60 7-15 8 5.13
incl. 8-9 1 25.31
64-79 15 8.52
incl. 69-74 5 15.92
------------------------------------------------------------------------
RC-93 640W 3714N/4440E 195/-60 47-54 7 7.83
incl. 49-50 1 39.99
RC-94 640W 3714N/4440E 220/-50 158-179 21 3.58
incl. 159-162 3 11.90
------------------------------------------------------------------------
RC-95 640W 3714N/4440E 220/-65 61-65 4 6.47
------------------------------------------------------------------------
RC-96 640W 3690N/4440E 195/-60 34-36 2 2.49
138-144 6 1.80
------------------------------------------------------------------------
RC-97 640W 3690N/4440E 170/-50 106-111 5 2.97
------------------------------------------------------------------------
RC-99 640W 3600N/4417E 015/-60 41-43 2 2.58
------------------------------------------------------------------------
RC-100 600W 3650N/4472E 195/-60 68-74 6 1.41
------------------------------------------------------------------------
RC-101 600W 3590N/4457E 015/-65 36-40 4 2.67
------------------------------------------------------------------------
RC-102 560W 3580N/4495E 015/-60 122-129 7 1.73
141-147 6 2.90
------------------------------------------------------------------------
RC-103 560W 3540N/4485E 015/-60 69-71 2 1.89
211-212 1 11.80
215-220 5 8.47
------------------------------------------------------------------------
RC-104 440W 3595N/4622E 015/-50 20-26 6 2.35
------------------------------------------------------------------------
RC-105 440W 3567N/4615E 015/-60 74-79 5 6.40
90-103 13 2.08
incl. 102-103 1 10.05
146-149 3 4.99
incl. 147-148 1 11.39
------------------------------------------------------------------------
RC-106 440W 3470N/4590E 015/-60 210-250 40 3.15
incl. 235-237 2 14.05
253-265 12 1.01
------------------------------------------------------------------------
RC-107 400W 3460N/4630E 015/-60 137-139 2 2.95
208-212 4 3.64
266-269 3 1.61
------------------------------------------------------------------------
RC-108 400W 3420N/4620E 015/-60 138-141 3 5.59
------------------------------------------------------------------------
RC-109 360W 3375N/4650E 015/-60 175-181 6 1.54
185-187 2 4.02
189-196 7 2.54
------------------------------------------------------------------------
RC-111 520W 3625N/4547E 015/-55 42-48 6 2.29
------------------------------------------------------------------------
RC-112 520W 3553N/4528E 015/-60 163-168 5 3.71
------------------------------------------------------------------------
RC-114 720W 3615N/4340E 015/-60 169-201 32 6.43
incl. 193-196 3 24.51
203-208 5 4.30
------------------------------------------------------------------------
Mineralized intervals are based on 1-metre composite samples utilizing a
0.5 g/t gold cut-off level with a maximum internal dilution of 2 metres.
The attitude of mineralized intervals varies and reported mineralized
intersections may not represent true widths.


------------------------------------------------------------------------
Golouma South Gold Deposit Mineralized Intersections
------------------------------------------------------------------------
Drill Grid Azimuth/ From - To Interval Gold
Hole Section Co-ordinate Dip (m) (m) (g/t)
------------------------------------------------------------------------

------------------------------------------------------------------------
RC-110 360S 2810N/4970E 110/-60 17-18 1 30.97
58-63 5 1.73
------------------------------------------------------------------------
DH-122 360S 2820N/4935E 110/-60 71-75 4 10.24
incl. 74-75 1 37.45
------------------------------------------------------------------------
Mineralized intervals are based on 1-metre composite samples utilizing a
0.5 g/t gold cut-off level with a maximum internal dilution of 2 metres.
The attitude of mineralized intervals varies and reported mineralized
intersections may not represent true widths.


------------------------------------------------------------------------
Masato Gold Deposit Mineralized Intersections
------------------------------------------------------------------------
Drill Grid Azimuth/ From - To Interval Gold
Hole Section Co-ordinate Dip (m) (m) (g/t)
------------------------------------------------------------------------

------------------------------------------------------------------------
DH-106 020N 9491N/4556E 110/-45 26-42 16 2.15
------------------------------------------------------------------------
DH-107 020N 9515N/4495E 110/-50 69-75 6 1.07
98-106 8 3.81
------------------------------------------------------------------------
DH-109 020N 9515N/4495E 110/-70 57-60 3 1.22
79-83 4 1.61
93-100 7 1.38
102-106 4 1.47
117-130 13 2.35
------------------------------------------------------------------------
DH-112 060S 9430N/4510E 110/-45 17-19 2 3.86
41-48 7 2.20
53-67 14 2.90
incl. 66-67 1 14.37
79-86 7 1.60
------------------------------------------------------------------------
DH-113 060S 9430N/4510E 110/-65 79-82 3 6.35
incl. 81-82 1 16.02
92-102 10 2.03
------------------------------------------------------------------------
DH-116 060S 9430N/4510E 110/-85 72-87 15 2.64
incl. 81-82 1 13.68
136-155 19 1.55
158-161 3 2.23
177-187 10 2.36
------------------------------------------------------------------------
DH-120 180S 9315N/4465E 110/-80 112-117 5 1.13
146-149 3 2.46
183-190 7 1.90
227-233 6 1.92
------------------------------------------------------------------------
Mineralized intervals are based on 1-metre composite samples utilizing a
0.5 g/t gold cut-off level with a maximum internal dilution of 2 metres.
The attitude of mineralized intervals varies and reported mineralized
intersections may not represent true widths.


------------------------------------------------------------------------
Masato North Target Mineralized Intersections
------------------------------------------------------------------------
Drill Grid Azimuth/ From - To Interval Gold
Hole Section Co-ordinate Dip (m) (m) (g/t)
------------------------------------------------------------------------

------------------------------------------------------------------------
DH-95 860N 0300N/4822E 095/-45 85-107 22 2.44
------------------------------------------------------------------------
DH-96 860N 0300N/4822E 095/-70 114-120 6 1.52
124-134 10 2.18
138-146 8 1.74
------------------------------------------------------------------------
DH-100 780N 0202N/4830E 095/-45 48-50 2 2.35
53-56 3 1.35
62-67 5 1.17
------------------------------------------------------------------------
DH-104 1060N 0498N/4858E 095/-45 52-54 2 3.22
110-112 2 1.71
------------------------------------------------------------------------
DH-105 1060N 0498N/4858E 095/-70 42-47 5 1.26
108-112 4 1.85
116-119 3 1.35
133-137 4 2.89
152-157 5 3.26
------------------------------------------------------------------------
Mineralized intervals are based on 1-metre composite samples utilizing a
0.5 g/t gold cut-off level with a maximum internal dilution of 2 metres.
The attitude of mineralized intervals varies and reported mineralized
intersections may not represent true widths.


------------------------------------------------------------------------
Golouma Northwest Target Mineralized Intersections
------------------------------------------------------------------------
Drill Grid Azimuth/ From - To Interval Gold
Hole Section Co-ordinate Dip (m) (m) (g/t)
------------------------------------------------------------------------

------------------------------------------------------------------------
DH-117 680W 3795N/4425E 100/-45 39-47 8 4.58
------------------------------------------------------------------------
DH-118 680W 3795N/4425E 100/-70 51-52 11 6.04
incl. 57-59 2 15.49
------------------------------------------------------------------------
DH-119 680W 3795N/4425E 100/-85 64-75 11 3.50
incl. 72-73 1 11.49
84-86 2 2.97
------------------------------------------------------------------------
Mineralized intervals are based on 1-metre composite samples utilizing a
0.5 g/t gold cut-off level with a maximum internal dilution of 2 metres.
The attitude of mineralized intervals varies and reported mineralized
intersections may not represent true widths.

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