Looking on the internet deeply has found these results:

have overburden is the most popular phrase on the web.

have a overburden 11 results on the web	have overburden 176 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
4, a wide fracture zone of about 27m thickness between �... The tunnel would have a overburden of maximum 120 m. The exploratory drill holes indicate that in DH	... categories were cho sen basically to test the difference between the productivity of wells that have overburden from wells which have no overburden cover 6 Problems encountered in surface and underground mines that have overburden consisting of thick unconsolidated sediments over thin bedrock. 11. 7 Cross�... As many as 35 magazines have overburden greater than 9 meters (30 feet) and are potentially available for pit storage. Construction began in June 1947, and�... �... 25 05). D. Engineering Advisory Board. pipes, shall have overburden of fill not less that 5 feet thick beneath the bottom of the drainage improvement. (orig. 10

have a overburden

11 results on the web

have overburden

176 results on the web

More popular!

4, a wide fracture zone of about 27m thickness between �...
The tunnel would have a overburden of maximum 120 m. The exploratory drill holes indicate that in DH

... categories were cho
sen basically to test the difference between the productivity of wells that have overburden from wells which have no overburden cover
6 Problems encountered in surface and underground mines that have overburden consisting of thick unconsolidated sediments over thin bedrock. 11. 7 Cross�...
As many as 35 magazines have overburden greater than 9 meters (30 feet) and are potentially available for pit storage. Construction began in June 1947, and�...
�...
25
05). D. Engineering Advisory Board.
pipes, shall have overburden of fill not less that 5 feet thick beneath the bottom of the drainage improvement. (orig. 10