Multistage cyclone and surface cleaning apparatus having same

A hand vacuum cleaner comprising:

• (a) a cyclone assembly having a front end and a rear end, the cyclone assembly comprising:
• i. a first stage cyclone having a first stage cyclone chamber and a first stage dirt collection chamber, the first stage cyclone having a first stage cyclone air inlet, a first stage cyclone air outlet and a first stage longitudinal cyclone axis about which the air rotates in the first stage cyclone chamber;
• and,
• ii. a second stage cyclone downstream from the first stage cyclone and at least partially nested in the first stage cyclone, a second stage dirt collection chamber, the second stage cyclone having a second stage cyclone chamber, a second stage cyclone air inlet, a second stage cyclone air outlet and a second stage longitudinal cyclone axis about which the air rotates in the second stage cyclone chamber,
• wherein the cyclone assembly has an openable end comprising at least one of the front end and the rear end, the openable end is moveable and closes the first stage cyclone chamber, the first stage dirt collection chamber, the second stage cyclone chamber and the second stage dirt collection chamber, whereby, when the openable end is opened, the first stage cyclone chamber, the first stage dirt collection chamber, the second stage cyclone chamber and the second stage dirt collection chamber are each opened.