Make a phone call they will receive a insecure load ticket and maybe an inspection.
From the law
Cargo securement — certain cargo
5(1) Any portion of a load of
(a) sand, gravel, crushed stone, ore, slag or salt,
or any mixture of them, consisting in whole or
part of particles 40 mm in diameter or smaller:
(b) waste: or
(c) shredded scrap metal:
that is carried by a vehicle on a highway and not
enclosed by the vehicle or a load container must be
covered with a covering that meets the requirements
of subsection (2).
http://web2.gov.mb.ca/laws/regs/current/_pdf-regs.php?reg=37/2005 Edited by bean, 2015-08-25 23:26:34