What jQuery syntax would I use for finding the all of the first-generation UL tags within a parent tag (and all of its children)

Question

Given the following HTML, how can I select all of the 1st-generation UL tags such that I end up with the following elements: company, subnav_1 - subnav_4, enginTool, prodSup, qualRel and lit, but none of the ULs inside of those elements?

<div id="col1">
  <h2></h2>
  <ul id="company"></ul>
  <div id="nav">
    <div id="navcordion">
      <h2></h2>
      <div>
        <ul id="subnav_1">
          <li>
            <ul></ul>
          </li>
        </ul>
      </div>
      <h2></h2>
      <div>
        <ul id="subnav_2">
          <li>
            <ul></ul>
          </li>
        </ul>
      </div>
      <h2></h2>
      <div>
        <ul id="subnav_3">
          <li>
            <ul></ul>
          </li>
        </ul>
      </div>
      <h2></h2>
      <div>
        <ul id="subnav_4"></ul>
      </div>
    </div>
    <div class="clear"></div>
  </div>
  <h2></h2>
  <h2></h2>
  <ul id="enginTool"></ul>
  <h2></h2>
  <ul id="prodSup"></ul>
  <h2></h2>
  <ul id="qualRel"></ul>
  <h2></h2>
  <h2></h2>
  <h2></h2>
  <ul id="lit"></ul>
  <h2></h2>
</div>

I've tried "#col1>ul", "#col1 ul:first" and "#col1 ul:nth-child(1)", but neither gives me all of the elements I'm after.