How do I expand a ActiveDirectorySubnetCollection so I can view all elements and export to a CSV file?

Hello,

In the following, I list SiteName, Location, Subnets, and Severs, however I don't see all the servers or the subnets, presumably because Subnets are an ActiveDirectorySubnetColletion and Servers are a ReadOnlyDirectoryServerCollection.  So I want to expand this property so I can see all the elements of the collection, or array.  I've tried the Select-Object -ExpandProperty, but I get an error due to -ExpandProperty looking for a string.

Any suggestions on how to expand both the Subnet and Server collections so I can see all elements and I can export to a CSV file?

[cmdletbinding()] 
param() 
$MyArray = @()
$Sites =[System.DirectoryServices.ActiveDirectory.Forest]::GetCurrentForest().Sites 

foreach ($Site in $Sites) { 

 $obj = New-Object -Type PSObject -Property (
@{ 
 "SiteName" = $Site.Name;"SiteLocation" = $Site.Location; "SubNets" = $Site.Subnets; "Servers" = $Site.Servers 
} 
) 
 $Obj | Sort $Site.Name | FL 
$MyArray += $obj
}

$MyArray | export-csv -path $env:HOMEPATH\SitesSubs.csv -NoTypeInformation 

Thanks for your help! SdeDot