Homestake Mining Company - 1999 Mine-by-Mine Operating Results
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Mine Ore treated ('000 t) Grade (g/t) Gold production (oz) Cash cost (US$/oz) Total cost (US$/oz)

Homestake ¶

S Dakota

1,249

0.171

212,700

261

278

McLaughlin §

California

2,834

0.070

121,500

223

337

Round Mountain §

Nevada (25%)

52,908

0.017

542,000

198

268

Marigold § #

Nevada (33.3%)

3,552

0.026

74,174

207

248

Ruby Hill #

Nevada

1,222

0.115

123,800

104

240

Pinson § #

Nevada (50%)

132

0.031

12,000

242

242

Agua de la Falda §

Chile (51%)

318

0.239

47,843

189

278

Williams ¶

Ontario (50%)

2,682

0.166

423,600

201

235

David Bell ¶

Ontario (50%)

490

0.346

141,600

187

222

Quarter Claim ¶

Ontario (25%)

n/a

n/a

45,200

n/a

n/a

Snip ¶

BC

71

0.665

42,300

208

208

Eskay Creek ¶

BC

193

3.138

558,400

131

202

KCGM §¶

WA (50%)

23,340

0.070

720,200

235

276

Plutonic ¶

WA

3,344

0.082

236,500

221

262

Darlot/Centenary ¶

WA

760

0.156

113,100

198

236

Lawlers §

WA (80%)

669

0.166

104,300

189

214

Peak Hill §

WA (66.7%)

968

0.050

32,090

183

192

Attributable total

.

.

2,390,000

192

246

¶ Underground § Open pit # Heap leach

(Source: World Gold)