Endeavour International Corporation Mining Reports Positive Drill Results at Agbaou Including 10 metres at 10.9 g/t by 24hgold

Re: News Release - Monday, September 12, 2011
Title: Endeavour Mining Reports Positive Drill Results at Agbaou Including 10 metres at 10.9 g/t

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George Town, Grand Cayman, September 12, 2011 - Endeavour Mining Corporation ("Endeavour" or the "Corporation") (TSX:EDV) is pleased to report positive results from the ongoing drilling at its Agbaou Gold project located in C�te d'Ivoire, West Africa.

Neil Woodyer stated "We continue to be very encouraged by the results at Agbaou and I am pleased to see this additional potential being developed. Any additions to reserves that may arise from this latest round of work can only serve to enhance the project."

Infill Drill Program

The 7,000 metre infill portion of the drilling program at the Agbaou feasibility-stage project in C�te d'Ivoire was completed in August 2011 and all results have now been received. A total of 63 holes were drilled in the Main deposit and 22 holes were drilled in the South deposit. The results have consistently demonstrated continuity of grades and widths and confirmed the quality and interpretation of the mineralised zones within the deposits. Intersections include 10 metres at 10.90 g/t gold and 12 metres at 7.51 g/t gold, additional highlights with true widths are provided in Table 1.

Table 1 Agbaou Main Infill Drilling Highlights

Hole ID	From (m)	To (m)	Length (m)	True Width (m)	Au Grade (g/t)
AGBRC483	20	28	8	6.8	7.11
including	24	28	4	3.4	10.79
AGBRC484	14	26	12	10.2	1.78
including	14	16	2	1.7	8.61
and	36	46	10	8.5	10.90
including	38	44	6	5.1	16.39
AGBRC485	0	8	8	6.8	5.17
including	6	8	2	1.7	18.04
AGBRC486	10	20	10	8.5	4.17
including	16	20	4	3.4	7.59
AGBRC487	10	14	4	3.4	1.60
AGBRC488	18	28	10	8.5	2.88
including	24	26	2	1.7	9.62
AGBRC489	10	12	2	1.7	4.37
AGBRC490	44	58	14	11.9	3.54
including	48	50	2	1.7	15.08
AGBRC491	36	54	18	15.3	3.57
including	38	44	6	5.1	8.56
AGBRC492	56	60	4	3.4	17.60
AGBRC493	44	48	4	3.4	2.06
and	70	82	12	10.2	4.67
including	72	78	6	5.1	7.37
AGBRC494	32	34	2	1.7	19.95
and	50	54	4	3.4	1.29
and	70	84	14	11.9	4.43
including	70	76	6	5.1	8.30
AGBRC495	80	102	22	18.7	5.49
including	84	86	2	1.7	21.67
AGBRC496	106	112	6	5.1	1.46
AGBRC497	82	94	12	10.2	7.51
including	88	92	4	3.4	12.98
AGBRC498	46	48	2	1.7	8.54
and	84	98	14	11.9	5.45
including	88	92	4	3.4	12.11
AGBRC499	76	84	8	6.8	3.75
including	78	80	2	1.7	7.06
AGBRC500	66	74	8	6.8	2.30
including	66	70	4	3.4	3.98
AGBRC501	32	34	2	1.7	7.34
and	88	98	10	8.5	2.91
including	92	96	4	3.4	5.83
AGBRC502	18	28	10	8.5	2.09
including	22	24	2	1.7	4.96
and	40	54	14	11.9	2.02
including	52	54	2	1.7	4.08
AGBRC503	50	56	6	5.1	1.72
including	54	56	2	1.7	4.06
and	70	74	4	3.4	8.37
AGBRC504	74	76	2	1.7	11.52
AGBRC505	70	76	6	5.1	1.22

These new results are currently being incorporated into the database and will reduce the nominal drill spacing down to 20 metres by 20 metres over an area covering 200 metres by 260 metres of the Main deposit and 60 metres by 180 metres of the South deposit. The area of infill drilling represents approximately 38% of the deposit area. This additional data will be the basis for a revised resource estimate planned to improve classification of portions of the mineral resource from Indicated to Measured.

Condemnation/Exploration Drill Program

The condemnation/exploration program resumed in August 2011 and a second drill rig was added to expedite the program, which was completed in late August 2011. A total of 12,914 metres in 250 holes were completed and assays have been reported for 60% of the program. Initial results from this program had outlined six targets for further investigation (News Release dated August 3, 2011). The most recent RC drill results combined with a review of 2010 RAB drilling has identified four additional targets for further drilling (Figure 1: Agbaou Condemnation/Exploration Drill Plan - http://files.newswire.ca/910/Figure_1_Drill_Plan.pdf). New RC drilling results include 14 metres at 2.69 g/t gold, and 22 metres at 3.66 g/t gold including 2 metres at 14.05 g/t gold, additional highlights are provided in Table 2.

The RAB drilling results from 2010 were reviewed in light of the positive RC drilling and were used to highlight other areas that warrant further drilling. Results include 6 metres at 1.04 g/t gold, additional highlights are provided in Table 3.

Table 2 Agbaou Main Condemnation/Exploration Drilling Highlights

Hole ID	From (m)	To (m)	Length (m)	Au Grade (g/t)
AGBRC384	3	15	12	0.66
AGBRC387	0	6	6	0.88
AGBRC388	3	6	3	1.42
AGBRC397	12	15	3	2.04
AGBRC599	36	38	2	1.06
and	44	46	2	6.71
AGBRC600	8	22	14	2.69
including	20	22	2	14.45
and	24	46	22	3.66
including	38	40	2	14.05
AGBRC601	0	14	14	1.25
and	12	14	2	4.18
AGBRC602	2	8	6	0.69

Table 3 Agbaou RAB Drilling Highlights

Hole ID	From (m)	To (m)	Length (m)	Au Grade (g/t)
AGBRB047	0	3	3	0.75
AGBRB048	0	3	3	0.68
AGBRB049	0	6	6	0.86
AGBRB050	3	9	6	1.04
AGBRB051	0	6	6	0.97

Additional Exploration Campaign

The initial 2011 condemnation/exploration drill campaign was planned to test the areas of significant mine infrastructure and resulted in the identification of a combined total of ten new targets, including the one target based on RAB drilling. This prompted Endeavour to allocate an additional US$800,000 budget to complete an additional 9,500 metres of RC drilling to further test these targets.

This additional drilling is being completed in two phases. Phase 1 is a series of fences of holes that flank these targets and provide 100 metre spacing between intersections, which are currently on lines 300 metres apart. Phase 2 is a 100 metre step out from the Phase 1 holes and will be adjusted based on the Phase 1 results.

Drilling has already commenced on Phase 1 of this additional campaign using the two RC rigs already on site.

Mine Development

Endeavour is also pleased to announce that SENET, a South African engineering company, has been engaged to update the Agbaou project in support of development studies.

Qualified Person

K. Kirk Woodman, P. Geo, Head of Exploration is the Qualified Person overseeing Endeavour's exploration projects in West Africa and has reviewed and approved this press release.

All sample preparations and standard 50-gram gold fire assays were performed by Bureau Veritas Laboratories, Abidjan, Cote d'Ivoire. Endeavour consistently employs a rigorous quality control and assurance program comprising regular insertion of certified reference standards, blanks and duplicates.

About Endeavour Mining Corporation

Endeavour is a gold producer. Endeavour also holds an extensive exploration land position and various advanced-stage development gold projects in West Africa. Endeavour has a global strategy, supported by financial resources and management's company building expertise, to grow into an intermediate gold producer through strategic acquisitions.

The common shares of Endeavour Mining Corporation are traded on the Toronto Stock Exchange under the symbol "EDV".

On behalf of Endeavour Mining Corporation

"Neil Woodyer"

Neil Woodyer
Chief Executive Officer

The Toronto Stock Exchange has not reviewed and does not accept responsibility for the adequacy or accuracy of this release. The foregoing information may contain forward-looking information relating to the future performance of Endeavour Mining Corporation. Forward-looking information, specifically, that concerning future performance, is subject to certain risks and uncertainties, and actual results may differ materially. These risks and uncertainties are detailed from time to time in the Corporation's filings with the appropriate securities commissions.

For additional information, contact:

Stephen Roberts, Senior Vice President - Investor Relations (604) 609-6130, sroberts@endeavourmining.com

or

Vanguard Shareholder Solutions 1-866-341-4111 or (604) 608-0824, investor@endeavourmining.com

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