____________________
refers
to
the
different
activities
involved
in
extracting
minerals
from
their
deposits
.
It
is
a
____________________
sector
activity
because
products
are
obtained
from
nature
.
However
,
it
is
linked
to
the
____________________
sector
because
it
provides
essential
raw
materials
for
industry
and
construction
.
There
are
four
basic
types
of
mining
:
____________________
mining
:
it
is
used
when
the
____________________
is
near
the
surface
.
____________________
mining
:
when
the
mineral
is
at
great
depth
.
It
is
expensive
because
wells
and
galleries
must
be
excavated
.
____________________
mining
:
special
boats
are
used
to
mine
the
____________________
____________________
for
minerals
.
The
material
is
taken
on
board
the
boats
.
____________________
____________________
:
they
are
used
mainly
in
the
extraction
of
fuel
like
crude
oil
and
natural
gas
.
