–
Ore reserves and resources – note 2(h).
There are numerous uncertainties inherent in estimating ore
reserves and resources. Assumptions that are valid at the time
of estimation may change significantly when new information
becomes available. Changes in the forecast prices of commodities,
exchange rates, production costs or recovery rates may change
the economic status of reserves and resources and may,
ultimately, result in the reserves and resources being updated.
–
Recoverable values of mining assets – notes 2(k), 16, 17 and 18.
The values of the Group’s mining assets are sensitive to a range
of characteristics unique to each mine unit. Key sources of
estimation for all assets include uncertainty around ore reserve
estimates and cash flow projections. In performing impairment
reviews, the Group assesses the recoverable amount of its
operating assets principally with reference to fair value less
costs of disposal, assessed using discounted cash flow models.
In performing impairment reviews, the Group assesses the
recoverable amount of its operating assets principally with
reference to fair value less costs of disposal, assessed using
discounted cash flow models. The recoverable values of the
CGUs and advanced exploration projects are determined
using a FVLCD methodology. FVLCD for CGUs was determined
using a combination of level and level inputs. The FVLCD of
the producing and developing stage mine assets is
determined using a discounted cash flow model (note ) and
for the advanced exploration projects is determined using a
discounted cash flow model or the value-in-situ methodology,
which applies a realisable “enterprise value” to unprocessed
mineral resources per ounce of resources, to estimate the
amount that would be paid by a willing third party in an arm’s
length transaction (notes and ()).
For the CGU’s discounted cash flow model, the Group uses two
approaches, depending on the circumstances: (i) the
traditional approach, which uses a single cash flow projection,
and (ii) the expected cash flow approach, which uses multiple,
probability-weighted cash flow projections. As at December
, the impairment reviews for the Group’s operating assets
were performed using a traditional approach.
There is judgement involved in determining the assumptions that
are considered to be reasonable and consistent with those that
would be applied by market participants. Significant estimates
used include future gold and silver prices, future capital
requirements, reserves and resources volumes, production costs
and the application of discount rates which reflect the macro-
economic risk in Peru and Argentina, as applicable. Judgement
is also required in determining the risk factor that will be applied
by market participants to take into account the water
restrictions imposed by the Chilean government over the Volcan
cash-generating unit. Changes in these assumptions will affect
the recoverable amount of the property, plant and equipment,
evaluation and exploration assets, and intangibles.
–
Mine closure costs – notes 2(o) and 29(1).
The Group assesses its mine closure cost provision
annually. Significant estimates and assumptions are made
in determining the provision for mine closure cost as there
are numerous factors that will affect the ultimate liability.
These factors include estimates of the extent and costs of
rehabilitation activities, technological changes, regulatory
changes, cost increases, mine life and changes in discount
rates. Those uncertainties may result in future actual
expenditure differing from the amounts currently provided. The
provision at the balance sheet date represents management’s
best estimate of the present value of the future closure costs
required. In July , the mine closure law for the province of
Santa Cruz in Argentina was published, establishing a period of
business days to present the Mine Closure Plan. The
regulation has not been published as of the date of the
financial statements. The Group considers the mine closure
provision in San Jose to be largely aligned with Argentina’s new
law, subject to further review once regulation is published.
–
Valuation of financial instruments – note 39.
The valuation of certain Group assets and liabilities reflects
the changes to certain assumptions used in the determination
of their value, such as future gold and silver prices (note ).
–
Non market performance conditions on LTIP 2021, LTIP 2022
and LTIP 2023 – note 30(c).
There are two parts to the performance conditions attached
to LTIP awards: % is subject to the Company’s TSR ranking
relative to a tailored peer group of mining companies, % is
subject to internal KPIs split equally between: (i) three-year
growth of the Company’s Measured and Indicated Resources
(MIR) per share (calculated on an enterprise value basis), and
(ii) average outcome of the annual bonus scorecard in respect
of , and , regarding LTIP ; , and
, regarding LTIP ; and , and ,
regarding LTIP , calculated as the simple mean of the
three scorecard outcomes.
Critical judgements:
–
Income tax – notes 2(t), 2(u), 14, 31 and 37(a).
Judgement is required in determining whether deferred tax
assets are recognised on the statement of financial position.
Deferred tax assets, including those arising from un-utilised
tax losses require management to assess the likelihood that
the Group will generate taxable earnings in future periods, in
order to utilise recognised deferred tax assets. Estimates of
future taxable income are based on forecast cash flows from
operations and the application of existing tax laws in each
jurisdiction. To the extent that future cash flows and taxable
income differ significantly from estimates, the ability of the
Group to realise the net deferred tax assets recorded at the
balance sheet date could be impacted. The Group analyses
the possibility of generating profit in all the companies and
determines the recognition of deferred tax. No deferred tax
asset is recognised in the holding and exploration entities as
they are not expected to generate any profit to settle the
temporary difference (refer to note ).
Judgement is also required when determining the recognition of
tax liabilities as the tax treatment of some transactions cannot be
finally determined until a formal resolution has been reached by
the tax authorities. Tax liabilities are also recorded for uncertain
exposures which can have an impact on both deferred and
current tax. Tax benefits are not recognised unless it is probable
that the benefit will be obtained and tax liabilities are recognised
if it is probable that a liability will arise (refer to note (a)). The
final resolution of these transactions may give rise to material
adjustments to the income statement and/or cash flow in future
periods. The Group reviews each significant tax liability or benefit
each period to assess the appropriate accounting treatment.
–
Life of mine (LOM).
There are several aspects which are determined by the life
of mine, such as ore reserves and resources, recoverable
values of mining assets, mine rehabilitation provision and
depreciation. The life of mine for an operation is specified in
the relevant Environmental Impact Assessment (EIA) which is
amended from time to time as more resources at the mine are
identified. EIAs are permits which are granted in the ordinary
course of business to the mining industry. While the processing
of such permits may be subject to delays, the Group has never
had an EIA denied. A crucial element of Peru’s legal framework
is the principle of predictability which, in essence, means that
if the legal requirements for any given permit have been
satisfied, the State cannot unlawfully deny the granting
of the permit. Taking this into consideration, as well as the
Group’s operational experience, the Group believes that
permits will be secured such that operations can continue
without interruption. In the unlikely scenario that this does not
occur, there could be material changes to those items in the
financial statements that are determined by the life of mine.
Hochschild Mining PLC
Annual Report & Accounts
1
Strategic Report
01—99
Governance
100—149
Financial Statements
150—
Further Information
227—231