Mr. Jeff Swinoga reports

FIRST MINING INTERSECTS 2.44 G/T GOLD OVER 108 METRES 10KMS NORTHEAST OF CURRENT RESOURCE AREA

First Mining Gold Corp. has released initial fire assay results from a regional exploration drilling program, currently under way at the company's wholly owned Goldlund gold property in Northwestern Ontario, Canada.

Drilling highlights:

• Hole MI-18-001 intersected 107.6 metres of 0.33 gram per tonne gold (g/t Au) including 11.0 m of 1.17 g/t Au;
• Hole MI-18-002 intersected 142.1 m of 1.90 g/t Au including 108.0 m of 2.44 g/t Au, and 31.0 m of 4.44 g/t Au and including 7.0 m of 14.67 g/t Au;
• Hole MI-18-003 intersected 48.0 m of 1.07 g/t Au including 15.0 m of 1.41 g/t Au;
• Hole MI-18-004 intersected 23.8 m of 0.54 g/t Au including 5.80 m of 1.40 g/t Au;
• Hole MI-18-005 intersected 10.0 m of 0.43 g/t Au and 1.0 m of 4.18 g/t Au;
• Hole MI-18-006 intersected 22.0 m of 0.69 g/t Au including 6.40 m of 2.09 g/t Au and 0.38 m of 21.66 g/t Au.

Note

Assaying for the Miller and Eaglelund drill programs is being done by SGS Canada Inc. at its laboratories in Red Lake and Cochrane, Ont. Reported widths are drilled core lengths; true widths are unknown at this time. Assay values are uncut.

Jeff Swinoga, president and chief executive officer of First Mining, stated: "This discovery of significant gold mineralization over such lengths and depths at the Miller prospect is a striking success on its own. However, of much greater significance to the bigger picture at Goldlund is that today's results confirm the presence of Goldlund-style mineralization approximately 10 kilometres from the current resource area along strike of this 50-kilometre-long property and indicate the near-term exploration potential to expand the Goldlund resource. Of the eight drill holes, seven had occurrences of visible gold."

This is the company's first drill program to test the regional potential of the Goldlund property to host significant gold mineralization similar to that demonstrated within the Goldlund resource area. Today's results are from the first six drill holes of a planned 13-hole diamond drill program at the Miller and Eaglelund prospect areas.

(1) Based on a technical report titled "Technical Report and Resource Estimation Update on the Goldlund Project" dated Feb. 7, 2017, which was prepared by WSP Canada Inc. in accordance with National Instrument 43-101 and which is available under the company's SEDAR profile, and on the company's website.

The two targeted areas lie approximately 10 kilometres northeast of the Goldlund resource area, along strike of the lithologic fabric of granodiorite sills/dikes intruded into regional mafic meta-volcanic greenstone which extends over 30 kilometres within the Goldlund property boundary. This elongated pattern of brittle granodiorite in ductile mafic meta-volcanic rocks is a key mechanism in focusing gold mineralization, as demonstrated in the area of the current Goldlund resource. The pattern of granodiorite sills/dikes hosted in mafic meta-volcanic can be observed in the geophysical map presented in an image on the company's website.

A total of eight drill holes were planned and completed at Miller while five drill holes are planned at Eaglelund and the first drill hole is currently under way.

The drilling results at Miller confirmed the same mineralogical associations of gold present in quartz-carbonate-sulphide stockwork veining in granodiorite which is very similar to that observed at the Goldlund resource area.

While it is too early yet to draw strong conclusions, some differences with the Goldlund resource area have been observed at Miller:

• At Miller, the four drill holes which crosscut the granodiorite from hangingwall to footwall indicate that the entire width of the dike appears receptive to gold mineralization, while at the Goldlund resource area, gold mineralization tends to occupy only 25 per cent to 40 per cent of the total dike width, generally favouring the footwall side.
• In addition, while visible gold (VG) and gold tellurides were common in First Mining's 2017/2018 infill drilling program at the Goldlund resource area, the frequency of occurrence of VG at Miller was much greater, with VG occurring in seven out of the total eight holes.

The occurrence of VG in the Miller drill holes is summarized in the associated table.

      OCCURRENCES OF VISIBLE GOLD (VG) AT MILLER PROSPECT
 
Drill hole       From        To                         Au g/t
ID                (m)       (m)      Sample ID    (fire assay)

MI-18-001          18      18.3      C00054021           8.588
MI-18-001        27.3      27.6      C00054034           8.670
MI-18-002         5.5         6      C00054174           1.903
MI-18-002           6       6.5      C00054175          11.880
MI-18-002         122     122.5      C00054316           2.320
MI-18-002         133     133.5      C00054330           0.585
MI-18-003          69      69.5      C00054423           2.362
MI-18-003          71      71.5      C00054426           2.964
MI-18-003          90      90.5      C00054450          17.230
MI-18-003        94.5        95      C00054457           1.344
MI-18-003          97      97.5      C00054461           3.862
MI-18-003       109.5       110      C00054479           0.007
MI-18-003       124.5       125      C00054499           0.315
MI-18-003         125     125.5      C00054500          10.550
MI-18-003       125.5       126      C00054501           0.842
MI-18-003       129.5       130      C00054507           4.391
MI-18-003       137.7       138      C00054517           9.865
MI-18-004
MI-18-005          71        72      C00054657           0.768
MI-18-006      103.62       104      C00054751          21.660
MI-18-006         109     109.4      C00054759           4.690
MI-18-007          94      94.5      C00054891  assays pending
MI-18-007        94.5        95      C00054892  assays pending
MI-18-007         101     101.5      C00054901  assays pending
MI-18-007         107     107.5      C00054911  assays pending
MI-18-007       107.5       108      C00054912  assays pending
MI-18-007         114     114.5      C00054925  assays pending
MI-18-007       132.5       133      C00054949  assays pending
MI-18-008         136     136.5      C00055084  assays pending
MI-18-008       137.5       138      C00055087  assays pending

Sawn core samples were submitted to SGS (Red Lake, Ont.) for initial 50-gram fire assay with AAS (atomic absorption spectrometry) finish. Au detection overlimits (greater than 10 g/t) are automatically reassayed with gravimetric finish.

Given the frequent occurrence of visible gold in the Miller drill holes, First Mining is following up their standard fire assays with a more definitive assay protocol of metallic screen fire assay using a 1,000-gram sample size to minimize the high nugget effect characteristic of Goldlund mineralization. Metallic screen fire assays will be completed at the SGS Red Lake and Cochrane laboratories on all sample intervals where VG has been observed, as well as selected sample intervals immediately adjacent to VG.

The 2018 regional exploration drilling campaign at Goldlund is designed to test the presence and character of potential gold mineralization distal from the current resource area.

   DRILL HOLE ASSAY RESULTS FROM THE MILLER PROSPECT
 
Hole ID              From         To    Length          Au
                      (m)        (m)       (m)       (g/t)

MI-18-001             7.0      114.6     107.6        0.33
incl.                15.0       88.6      73.6        0.41
incl.                16.0       18.3       2.3        1.93
and incl.            18.0       18.3       0.3        8.59
and incl.            23.3       29.6       6.3        0.91
and incl.            27.3       27.6       0.3        8.67
and incl.            77.6       88.6      11.0        1.17
and incl.            87.6       88.6       1.0        6.27
MI-18-002             0.4      142.5     142.1        1.90
incl.                 1.5      109.5     108.0        2.44
and incl.            57.5       88.5      31.0        4.44
and incl.            75.5       82.5       7.0       14.67
and incl.            81.5       82.5       1.0       88.80
and incl.           102.5      109.5       7.0        9.60
and incl.           108.5      109.5       1.0       54.47
MI-18-003            69.0       72.0       3.0        1.12
and                  90.0      138.0      48.0        1.07
incl.               90.00       90.5      0.50       17.23
and incl.           94.00       97.5      3.50        2.28
and incl.           105.0      106.0      1.00        3.90
and incl.           115.0      130.0      15.0        1.41
and incl.          125.00      125.5      0.50       10.55
and incl.          137.70      138.0      0.30        9.87
MI-18-004            34.0       57.8      23.8        0.54
incl.                34.0       35.0      1.00        2.56
and incl.            52.0       57.8      5.80        1.40
and incl.            55.0       56.0      1.00        6.12
MI-18-005            46.0       47.0      1.00        4.18
and                  68.0       78.0     10.00        0.43
and incl.            72.0       74.0      2.00        1.25
and                 109.0      110.0      1.00        1.00
MI-18-006            76.0       77.0       1.0        1.38
and                 102.0      124.0     22.00        0.69
incl.               103.0      109.4      6.40        2.09
and incl.           103.6      104.0      0.38       21.66
and incl.           109.0      109.4      0.40        4.69
and                 145.0      147.0      2.00        1.48
and                 169.0      170.0      1.00        3.01

Assaying for the 2018 regional Goldlund drill programs is being done by SGS at its laboratories in Red Lake, Ont. Prepared samples are analyzed for gold by lead fusion fire assay with an atomic absorption spectrometry (AAS) finish, with metallic screen fire assays being run on selected samples. Multielement analysis on the mineralized zones is also being undertaken by two-acid aqua regia digestion with ICP-MS (inductively coupled plasma mass spectrometry) and AES (atomic emission spectroscopy).

Quality assurance/quality control procedures

The QA/QC program for the 2018 regional drilling programs at Miller and Eaglelund consists of the submission of duplicate samples and the insertion of certified reference materials and blanks at regular intervals. These are inserted at a rate of one standard for every 20 samples (5 per cent of total) and one blank for every 30 samples (3 per cent of total). The standards used in the 2018 regional program consist of five different gold grades ranging from one to nine g/t Au, and are sourced from CDN Resource Laboratories in Langley, B.C. Blanks have been sourced locally from barren granitic material.

Field duplicates from quartered core, as well as coarse or pulp duplicates taken from coarse reject material or pulverized splits, are also submitted at regular intervals with an insertion rate of 4 per cent for field duplicates and 4 per cent for coarse or pulp duplicates. Additional selected duplicates are being submitted to an umpire lab for check assaying. SGS also undertakes its own internal coarse and pulp duplicate analysis to ensure proper sample preparation and equipment calibration.

Dr. Chris Osterman, PGeo, chief operating officer of First Mining, is the qualified person for the purposes of National Instrument 43-101 Standards of Disclosure for Mineral Projects and he has reviewed and approved the scientific and technical disclosure contained in this news release.

About the Goldlund project

The Goldlund deposit is situated within a land package of approximately 280 square kilometres (28,000 hectares) referred to as the Goldlund gold project. The property has a strike length of over 50 kilometres in the Wabigoon subprovince. Goldlund is an Archean lode-gold project located in Northwestern Ontario, approximately 60 kilometres from the township of Dryden. The claims that make up the land package cover the historic Goldlund and Windward mines.

On Jan. 9, 2017, the company announced an initial mineral resource estimate for Goldlund that was prepared by WSP Canada Inc. in accordance with NI 43-101. At a 0.4 g/t Au cut-off grade, the Goldlund deposit contains pit-constrained indicated resources of 9.3 million tonnes at 1.87 g/t Au, or 560,000 ounces of gold. At a 0.4 g/t Au cut-off grade, the Goldlund deposit contains pit-constrained inferred resources of 40.9 million tonnes at 1.33 g/t Au, or 1.75 million ounces of gold. The technical report for this resource estimate, which is titled "Technical Report and Resource Estimation Update on the Goldlund Project" and is dated Feb. 7, 2017, is available under the company's SEDAR profile, and is also available on the company's website.

About First Mining Gold Corp.

First Mining Gold is an emerging development company with a diversified portfolio of gold projects in North America. Having assembled a large resource base of seven million ounces of gold in the measured and indicated categories and five million ounces of gold in the inferred category in mining-friendly jurisdictions of Eastern Canada, First Mining is now focused on advancing its assets toward production. The company currently holds a portfolio of 25 mineral assets in Canada, Mexico and the United States.

We seek Safe Harbor.